51-100 employees
Series A
Digital Platform
Marketing & Sales Tech
SaaS

Klaviyo Company Overview

Our Story:

Before starting Klaviyo in 2012, we spent time at Google, Performable (acquired by HubSpot) and Applied Predictive Technologies (acquired by Mastercard) using data and technology to help marketers get smarter at many of the world’s largest companies.

Over the last four years, Klaviyo has grown from two people to a team of over 50 people in downtown Boston. From fast growing ecommerce stores to some of the world’s largest companies, we work with thousands of companies around the globe to send tens of millions of emails every day.

Bootstrapped and profitable from the start, in 2015, we partnered with Accomplice to allow us to go faster.

Our Approach:

Klaviyo has built database technology to make 1:1 personalized email easy. For too long companies were stuck blasting everyone with the same email. Not because they think that’s what their customers want, but because they don’t have a choice.

Klaviyo fundamentally changes the game. Our software aggregates everything a business knows about their customers into individual profiles in our customer analytics database. We’ve paired that with an email platform that makes designing beautiful emails easy. Those pieces together, Klaviyo is one unified platform for personalized, 1:1 email that drives results.

Jobs at Klaviyo

 

Job Category

21 Jobs Listed
Boston |

About Klaviyo

Klaviyo is using technology to reinvent email marketing from the ground up! For far too long email marketing has been pretty selfish. Companies blast everyone with the same email, not because they think that’s what customers want, but because they don’t have a choice. Klaviyo fundamentally changes the game. Our software ties together everything companies know about their customers, processes massive quantities of data in real-time, and uses it to drive a platform that’s part CRM, part analytics engine and 100% an email platform that drives results. Technology has come a long way in the last 15 years, but email hasn’t really changed. We’re here to fix that.


Support Team

The support team at Klaviyo is a critical part of our future success. We take the success of our customers incredibly seriously and we are looking for only the best people out there. We are very interested in individuals who have a track record of finding creative solutions to unique problems, and who will thrive in challenging situations.

You Will

  • Provide high-quality technical support for Klaviyo customers.
  • Deliver effective technical customer support to our rapidly growing customer base.
  • Deliver solutions to both technical and non-technical end users while also supporting a wide range of technologies.
  • Take ownership of technical issues, and work with our Product and Development group to resolve more advanced issues when necessary.
  • Resolve escalated customer complaints without the need for team lead intervention.
  • Document troubleshooting and problem resolution steps.
  • Work on other programming and documentation projects as required.
  • Participate in providing training to customers as required.

You Have

  • 2+ years in a technical support role.
  • Client-facing experience.
  • Written and verbal skills; excellent phone manner.
  • Firm grasp of how the web works, networking, and software products.
  • Knowledge of DNS, IPs and other networking concepts.
  • In depth working knowledge of JavaScript, HTML, CSS.
  • Proficiency with APIs.
  • (Not required, but icing on the cake) Experience with Email Marketing or E-Commerce.


Boston |

About Klaviyo

Klaviyo is using technology to reinvent email marketing from the ground up. For too long marketing has been pretty selfish. Companies blast everyone with the same email, not because they think that’s what customers want, but because they don’t have a choice. Klaviyo fundamentally changes the game. Our software ties together everything companies know about their customers, processes massive quantities of data in real-time, and uses it to drive a platform that’s part CRM, part analytics engine, and 100% an email platform that gets results. Technology has come a long way in the last 15 years, but email hasn’t really changed. We’re here to fix that.


Sales Engineering at Klaviyo

Sales Engineering is a critical part of the sales cycle but is NOT a typical “give demos” role.  A true expert in the Klaviyo product, the primary mission of a Klaviyo Sales Engineer is to close deals with long term customers. The Sales Engineer is a go-to technical resource for the sales team, helping to make prospects successful through live assistance, behind the scenes support and education.  A Sales Engineer relies on their technical expertise to effectively explain and apply technical concepts including APIs, the inner workings of the Klaviyo platform, and integrations with 3rd party and other client systems, to both prospects and teammates.

You Will

  • Effectively balance a range of core functions in support of constantly striving to help increase the output and efficiency of the sales team
  • Be the go-to internal technical resource for the entire go to market team, educating team members as well as prospects in service of providing a consistently positive Klaviyo experience
  • Develop and maintain personal relationships with prospects during the sales process across many different prospects simultaneously
  • Use your in-depth product knowledge and technical skills to suggest and potentially develop product solutions for prospects
  • Act with urgency and precision to give users best in class pre-sales support in troubleshooting issues as they arise
  • Solve problems manually first and then either automate future solutions and/or collaborate with Product and Engineering to proactively improve the Klaviyo product and customer experience over time

You Have

  • 3 plus years of sales engineering, technical support, or engineering experience
  • A naturally helpful mindset, great attention to detail, and high technical aptitude
  • Experience in a start-up or a start-up mentality
  • A scrappy, hands-on, get stuff done attitude
  • The desire to be a cross-functional team player
  • Experience working with sales and a sharp business acumen
  • Strong ability to effectively manage a range of simultaneous engagements
  • Working knowledge of web languages preferred (HTML, Javascript, CSS)
  • Ability to effectively convey customer requirements to Product Management, Support, and Engineering teams
  • Experience developing products or contributing to open source projects is a plus


Klaviyo is a team of people who are crazy motivated by growth.

It’s what we help our customers do: grow their businesses by making it possible and easy for them to use their data to power better marketing.

It’s how we behave as individuals: we’re all deeply passionate about learning.

It’s how we manage our business: we have thousands of paying customers, we’re profitable, and we’re growing insanely fast.

And it’s what our culture is all about. Working at Klaviyo means you’ll work on things you never imagined you would; you’ll grow in ways you didn’t consider possible, and you’ll do the best work of your career with people who are just as motivated and talented as you are.  

Your curiosity has led you this far, so if this sounds like your ideal place to work, apply now!

No phone calls or agency submissions, please. 

Boston |

About Klaviyo

Klaviyo is using technology to reinvent email marketing from the ground up. For too long marketing has been pretty selfish. Companies blast everyone with the same email, not because they think that’s what customers want, but because they don’t have a choice. 

Klaviyo fundamentally changes the game. Our software ties together everything companies know about their customers, processes massive quantities of data in real-time, and uses it to drive a platform that’s part CRM, part analytics engine and 100% an email platform that gets results. 

Technology has come a long way in the last 15 years, but email hasn’t really changed. We’re here to fix that.


Engineering at Klaviyo

We love programming and the excitement that comes with building something people use. We are the kind of people that love talking to users and can find the balance between solving a problem quickly and thinking about how your code will work in the future. We love to move fast, keep learning and get stuff done.


You Will

  • Have the chance to build the next set of features that our customers will rely on to move their businesses forward. 
  • Work on projects that have impact 
  • Wholly own features

You

  • Have experience building web applications and enjoy working with front end technologies and server side languages 
  • Are comfortable digging into performance issues -- whether it's a slow loading page or a database query that won't return. 
  • Enjoy shipping code and getting feedback from thousands of users to make your software better. 
  • Like working on a small team. At Klaviyo, you are responsible for features, but you'll collaborate with everyone to make sure we get the best solution to hard problems.

Technologies We Use

  • HTML, JavaScript, LESS/SASS/CSS 
  • Python, Django

Products We Work On

  • Email Deliverability 
  • Mobile 
  • Templating 
  • Segmentation 
  • Metrics/Analytics 
  • Integrations/Data Feeds



Boston |

About Klaviyo

Email will no longer suck. Klaviyo is using technology to reinvent email marketing from the ground up. For too long marketing has been pretty selfish. Companies blast everyone with the same email, not because they think that’s what customers want, but because they don’t have a choice.

Klaviyo fundamentally changes the game. Our software ties together everything companies know about their customers, processes massive quantities of data in real-time, and uses it to drive a platform that’s part CRM, part analytics engine and 100% an email platform that gets results.

Technology has come a long way in the last 15 years, but email hasn’t really changed. We’re here to fix that.


About the Role

Site Reliability Engineering (SRE) is essentially what you get when you treat system operations as if it is a software problem. The mission of the Site Reliability Engineering team is to ensure uninterrupted service for Klaviyo customers and act as force multiplier for Klaviyo product teams to deliver better software faster.

Klaviyo is a high growth technology driven company and is passionate about the user experience of its application and the well orchestrated operations of its service infrastructure. The SRE team works on its own initiatives to build foundational backend services but also builds tooling and automation to allow product teams to release and scale their software predictably.

SREs are team players and embed themselves within product teams to advance the architecture and performance of software systems and to train their peers in topics such as debugging distributed systems, building self-healing capabilities or eking out every drop of performance possible.

As a Site Reliability Engineer you will have ownership of foundational Klaviyo services and a big impact on our product teams. Klaviyo’s infrastructure, event processing, and team have grown 300% year over year so there are always new skills to learn and technical challenges to solve the right way.

This position is full-time and based in Boston.

Responsibilities

  • Design, write and deliver software to improve the availability, scalability, latency, and efficiency of Klaviyo’s services.
  • Perform quantitative analysis to understand high-impact events that break Klaviyo functionality and manage the cross-functional effort resolve those events
  • Solve problems relating to mission critical services and build automation to prevent problem recurrence; with the goal of automating response to all non-exceptional service conditions.
  • Engage in service capacity planning and demand forecasting, software performance analysis and system tuning.
  • Uncover and advocate for preventative, upstream solutions with internal stakeholders and external vendors and dependencies
  • Confidently make informed, data-driven decisions in a fast paced environment with competing priorities
  • Identify and drive opportunities to improve operational workflows
  • Conduct periodic on call duties
  • Educate other Klaviyo engineers on the best practices for building and operating highly reliable systems

Requirements

  • BA or BS Degree in Computer Science, related field, or equivalent experience
  • Technical, Engineering or Quantitative background
  • Proven experience with Linux (we run Ubuntu) and all layers of the networking stack. You should be confident administering and debugging production Linux systems
  • Experience working on team software projects
  • Experience in one or more of: Python, Ruby, Go.
  • Familiarity with running and scaling distributed software systems (load balancing, high availability, systems monitoring, etc.)

Bonus Points:

  • Expertise in designing, analyzing and troubleshooting high-traffic, large-scale distributed systems.
  • Understanding of Unix/Linux systems from kernel to shell and beyond, taking in system libraries, file systems, and client-server protocols along the way.
  • Experience with Amazon Web Services (AWS) or similar cloud compute offerings
  • Networking: knowledge and understanding of network theory, such as different protocols (TCP/IP, UDP, ICMP, etc), MAC addresses, IP packets, DNS, OSI layers, and load balancing).
  • Experience with building and scaling highly-reliable distributed Python systems (we use Django extensively)
  • Experience with instrumenting and monitoring production systems (Nagios, Statsd/Graphite, APM, etc.)
  • Systematic problem solving approach, coupled with a strong sense of ownership and drive


Boston |

Engineering at Klaviyo


Klaviyo is a Boston startup located right in the heart of downtown Boston.  We craft software helping thousands of ecommerce companies to have engaging relationships with hundreds of millions of consumers.  We love tackling tough engineering problems and look for full stack engineers who specialize in certain areas but are passionate about building, owning & scaling features end to end from scratch and breaking through any obstacle or technical challenge in their way. We push each other to move out of our comfort zone, learn new technologies and work hard to ensure each day is better than the last.


Klaviyo operates a real-time data platform coded in Python built for massive scale on Amazon Web Services (AWS). Engineers come to Klaviyo with experience in a variety of languages and from a number of disciplines.

You Will

  • Have the chance to wholly own features that thousands of our customers rely on daily to reach 100,000,000+ of consumers to drive their business forward
  • Work on crafting our highly scalable real-time data pipeline that processes billions of events monthly across data sets growing to petabyte scale
  • Be empowered to own the mission, technical direction and operations of projects that have immediate impact
  • Advance your technical skills in all facets ranging from front end web development and user experience to machine learning and massively parallelized data pipelines
  • Contribute to the company as a subject matter expert in multiple areas, constantly pushing yourself to be a better engineer and to level up all of your peers within your team and within Klaviyo

You

  • Have experience building products that matter and pushing yourself and your team to be better engineers and build a product with passionate advocates
  • Enjoy working with new technologies ranging from the frontend to backend, and are particularly passionate and an expert in multiple stack areas. You show this by having strong and opinionated experience with various technologies and know how to pick the right tool for any job
  • Love digging into performance and scalability issues to drive breakthrough solutions-- whether it's a slow loading UI or too many clicks in a workflow, a database query timing out, or a queue that just won’t drain. You recognize all problems can be solved
  • Enjoy shipping code early & often in an agile fashion, pairing with product management to craft better software by soliciting feedback from thousands of end users
  • Like working on small, autonomous agile teams. At Klaviyo, you will have ownership of features, but you'll collaborate with everyone to make sure we produce the right solution

Technologies We Use

  • Python, Django, Celery
  • MySQL, Cassandra, RabbitMQ, Redis
  • HTML, JavaScript, LESS, Backbone.js, React
  • Amazon Web Services (EC2, RDS, Aurora, etc.)

Problems We're Solving

  • As a high growth startup we look for candidates that can rise to any occasion and seek out new opportunities to make their mark on our product.  The following are examples of exciting projects the engineering team is working on:
  • Scaling our data processing systems to handle orders of magnitude more data and perform advanced analytics of billions of events in real time by innovating on event-driven data pipelines and building robust distributed data stores
  • Overhauling our frontend interfaces to dramatically increase information density and capabilities of our analytics and reporting system. We will enable powerful, expressive and flexible querying of our data sets without compromising the ease of use of the experience
  • Reliably integrating with 10s of thousands of remote API endpoints to process ecommerce data for historical and real-time syncs
  • Extracting additional insight from our data sources using machine learning and other data science techniques to allow ecommerce marketers to more efficiently perform their jobs and grow their business, and build features into Klaviyo product to make it incredible easy for marketers to follow best practices


Klaviyo is a team of people who are crazy motivated by growth.

It’s what we help our customers do: grow their businesses by making it possible and easy for them to use their data to power better marketing.

It’s how we behave as individuals: we’re all deeply passionate about learning.

It’s how we manage our business: we have thousands of paying customers, we’re profitable, and we’re growing insanely fast.

And it’s what our culture is all about. Working at Klaviyo means you’ll work on things you never imagined you would; you’ll grow in ways you didn’t consider possible; and you’ll do the best work of your career with people who are just as motivated and talented as you are.  

Your curiosity has led you this far, so if this sounds like your ideal place to work, apply now!

No phone calls or agency submissions, please.  

Boston |

About Klaviyo

Klaviyo is using technology to reinvent email marketing from the ground up. For too long marketing has been pretty selfish. Companies blast everyone with the same email, not because they think that’s what customers want, but because they don’t have a choice. Klaviyo fundamentally changes the game. Our software ties together everything companies know about their customers, processes massive quantities of data in real-time, and uses it to drive a platform that’s part CRM, part analytics engine, and 100% an email platform that gets results. Technology has come a long way in the last 15 years, but email hasn’t really changed. We’re here to fix that.


Senior Account Executive at Klaviyo

AEs at Klaviyo are given a tremendous opportunity to have a huge positive impact on Klaviyo’s prospects, on Klaviyo’s trajectory and as a result, on themselves.  At Klaviyo, AEs pride themselves on being product experts who focus on closing deals the right way -- with the right customers whom they set up for success.  AEs at Klaviyo run the entire sales cycle -- from qualification to demo to driving the buying process to close -- with minimal air support, all while managing dozens of prospects at once.  The best AEs are able to close over 50% of their opportunities, forecast their business with accuracy, and proactively manage and extract value from their territory long term.

You Will:

  • Close 15-20 new customers per month primarily from inbound leads
  • Quickly become an expert in the Klaviyo product
  • Actively manage your pipeline and territory for long-term sustained success
  • Accurately record interactions with prospects in Salesforce.com
  • Team with BDRs and Sales Engineers in pursuit of business
  • Report to the Director of Sales

You:

  • Are excited, motivated, and inspired by exceeding goals and making $$
  • Have a well-developed sales framework that you can apply to Klaviyo, while also embracing opportunities to learn and improve
  • Are adept at influencing and relationship building
  • Are thoughtful, engaging, and energetic
  • Are excited to be a part of and have an impact on a rapidly-growing, profitable startup


Klaviyo is a team of people who are crazy motivated by growth.

It’s what we help our customers do: grow their businesses by making it possible and easy for them to use their data to power better marketing.

It’s how we behave as individuals: we’re all deeply passionate about learning.

It’s how we manage our business: we have thousands of paying customers, we’re profitable, and we’re growing insanely fast. And it’s what our culture is all about.

Working at Klaviyo means you’ll work on things you never imagined you would; you’ll grow in ways you didn’t consider possible, and you’ll do the best work of your career with people who are just as motivated and talented as you are.  

Your curiosity has led you this far, so if this sounds like your ideal place to work, apply now!

Boston |

A Product Manager at Klaviyo is obsessed with finding elegant technical solutions to complex customer problems.

Our customers are eCommerce marketers who want to connect with their customers more effectively and measure their results instantly. Our customers are passionate, hard-working, understaffed, ambitious and fun people. They think hard, work harder and are proud of their accomplishments. They are an extension of our team and drive us to help them be better.

As our business and engineering team continues to scale, we are looking to add bright, analytical, passionate people to our product team.


Key Responsibilities:


Discover

Get in the guts of the product - use it with our customers, solve their challenges, know every nook and cranny of how everything works and, more importantly, how our customers use the product.

Great ideas come from everywhere - work with different constituents to source great ideas.

Monitor key metrics and identify ways to improve them (e.g. Net Promoter Score, Monthly Recurring Revenue, Customer Count, Product Engagement, etc.).

Conduct research to inform feature functionality, design and pricing.


Organize

Synthesize feedback from customers, external sources (research) and internal sources (departments).

Own an area of the product and help shape the roadmap.

Work with awesome Engineers on a scrum team to build products that wow our customers.

Define and measure the impact of our work.


Communicate

Help communicate across departments what we are doing and why.

Smile. This is a fun place to be. We want you to have fun, too.

Work with Marketing, Sales and Customer Success to prepare for product releases and address customer challenges.

Qualifications:

  • You’ve shipped great software and can provide solid evidence of how you made it happen.
  • You have at least 3 years of product management experience.
  • You can write a for loop and generate a script to automate simple processes.
  • There are people who will say they loved working with you.
  • You have strong communication skills, both written and verbal.
  • Technical or UX experience, background and/or education

Bonus points:

  • Experience developing products in some of the following areas: CRM, Marketing Automation, Reporting, Developer Ecosystem
  • Worked with an Agile engineering team

In your first 30 days:

  • You will get a feel for the product, the market and the company:
  • Spend 80% of your time working with support
  • Answer >20 support tickets
  • Talk to >10 customers on the phone and/or in person
  • Connect with every internal team and learn what will help them succeed
  • Learn the basic architectural overview of the product
  • In your first 60 days, you will become a valuable member of the product and engineering organization:
  • Spend 60% of your time with support
  • Become a go-to expert on how the product should behave
  • Take ownership of 1 key area that you will improve
  • Complete a product enhancement from spec to successful completion during a sprint

In your first 90 days:

  • You will push the ball forward:
  • Spend 40% of your time with support
  • Become the owner of a functional area of the product
  • Plan out a product improvement (identify key metrics to improve, brainstorm ideas to improve, start testing hypotheses with customers)


Klaviyo is a team of people who are crazy motivated by growth.

It’s what we help our customers do: grow their businesses by making it possible and easy for them to use their data to power better marketing.

It’s how we behave as individuals: we’re all deeply passionate about learning.

It’s how we manage our business: we have thousands of paying customers, we’re profitable, and we’re growing insanely fast.

And it’s what our culture is all about. Working at Klaviyo means you’ll work on things you never imagined you would; you’ll grow in ways you didn’t consider possible; and you’ll do the best work of your career with people who are just as motivated and talented as you are.  

Your curiosity has led you this far, so if this sounds like your ideal place to work, apply now!

No phone calls or agency submissions, please. 

Boston |

About Klaviyo


At Klaviyo, marketers know that "sending the right message to the right people at the right time" is the key to getting better results. We believe the key reason behind irrelevant marketing isn’t the people; it’s the tools they have to work with. Despite the explosion in Marketing Technology, the products that let marketers communicate with people in a truly relevant, engaging way are either a pain in the ass to use or missing important features. 


That’s where Klaviyo comes in. Klaviyo helps marketers drive more sales with super-targeted, highly relevant email, Facebook, and Instagram marketing.


We have thousands of paying customers, we're profitable, and we're growing very quickly. If you care about making marketing relevant so it drives meaningful business results, we want to meet you!


About the Role


Klaviyo is a product driven company, and we’re passionate about user experience and design. 


The Product Designer will join a team and be involved in every aspect of the product conceptualization and development process. Responsibilities range from brainstorming the next great product, prototyping the experience, pairing with engineering and product management during agile development, tweaking pixels right before launch, and working with customers to perform usability testing. You will be expected to utilize your full range of product design, interaction design, and visual design skills, and – individually – you will own the experience for at least one area/feature of the Klaviyo product.


You’ll additionally work with the design team to improve the overall user experience of the Klaviyo product as well as its individual interaction patterns and components. On top of that, you will work to grow the quality of the product as well as the design capabilities of the company and agile teams.


This position is full-time and based in Boston.


Responsibilities:

  • Take broad, conceptual ideas and turn them into something useful and valuable for our rapidly growing customer base
  • Contribute to the company and product style guide
  • Design user flows and experiences that are intuitive and simple (fewer clicks and screens is better) for our main product and our mobile applications
  • Contribute to high-level strategic decisions with the rest of the product and leadership teams
  • Partner with product managers, engineers, researchers and content strategists to oversee the user experience of a product from conception until launch (and then some)
  • Pair with design resources on marketing and other teams to ensure consistency across Klaviyo web properties and initiatives
  • Help grow the Product Design/UX TeamGive, solicit, and take feedback from other designers, engineers, and product managers to continually raise our bar for quality

Requirements:

  • Have 2 or more years working as a designer in a tech/product company or agency operating in an agile software development process
  • You possess excellent communication skills (you should be able to clearly articulate your design process, inspiration and decisions)
  • Strong visual design skills and a good eye. You push the boundaries of visual and interaction design
  • Some experience with front-end programming or prototyping (ideally with XHTML, CSS and Javascript)
  • The ability to think at a high level about product strategy and vision (not just 'how it should look' but 'what we should build' and ‘how we will know customers love it’)
  • Experience in building and shipping applications or software and iterating over time
  • Experience designing in Sketch and Invision
  • Must have a portfolio featuring examples of interaction design work

Bonus Points:

  • Experience developing or working within a design system
  • Experience working with marketing technology products or Ecommerce businesses
  • Experience with Javascript frameworks such as Backbone.js and React.js 
  • Experience utilizing CSS (LESS/SASS) and for building responsive applications
  • Design experience across a variety of platforms (desktop, tablet, iOS, Android, etc.)



Boston |

Engineering at Klaviyo


Klaviyo is a Boston startup located right in the heart of downtown Boston.  We craft software helping thousands of ecommerce companies to have engaging relationships with hundreds of millions of consumers.  We love tackling tough engineering problems, and push each other to move out of our comfort zone, learn new technologies and work hard to ensure each day is better than the last.  We seek out full stack engineers who specialize in certain areas but are passionate about building, owning & scaling new features end to end. We relish breaking through obstacles & technical challenges and moving continually faster.


Klaviyo is looking for Lead Software Engineers to own core areas of our platform: guiding the technical architecture and engineering teams in areas such as:


Product Experience - Owning and optimizing the frontend experience of the Klaviyo app in conjunction with the Product team, ensuring existing features remain best-in-class while continually launching new capabilities allowing marketers to easily make data-driven decisions, and send targeted communication, powered by Klaviyo.


Integrations - Operating a reliable and scalable system to handle the chaotic world of 3rd party integrations. Klaviyo integrates with 50+ discrete 3rd party platforms hitting tens of thousands of unique API endpoints on the web daily. We’re continually pulling billions of data points monthly, and are looking for a polyglot lead to manage our extensions and integrations.


Analytics & Segmentation - Scaling a data pipeline & storage system already processing billions of events and doubling year over year. Klaviyo is challenged to perform real-time segmentation of hundreds of millions of users, enabling Klaviyo teams and our customers to answer complex queries in fixed time to gain insight.


We have no pure people “managers” at Klaviyo and we expect everyone to be very technical -- this means everyone is coding down from the CEO, to the VP of Engineering and team leads. Lead Engineers are expected to spend the majority of their time coding while also working to level up the engineers on their team.  Opportunities are available both for Lead Engineers that want to manage team members and grow in people management skills and responsibilities, as well as those that strictly desire to progress on a technical leadership track.

You Will:

  • Have the chance to wholly own features that thousands of our customers rely on daily to reach 100,000,000+ of consumers to drive their business forward.
  • Work on crafting our highly scalable real-time data pipeline that processes billions of events monthly across data sets growing to petabyte scale.
  • Lead your team by example, working with them to level up their code quality through code reviews and 1on1 mentorship, creating & vetting technical architectures, and writing code yourself that raises the bar for Klaviyo engineering.
  • Be empowered to own the mission, technical direction and operations of projects that have immediate impact.
  • Advance your technical skills in all facets ranging from front end web development and user experience to machine learning and massively parallelized data pipelines.
  • Contribute to the company as a subject matter expert in multiple areas, constantly pushing yourself to be a better engineer and to level up all of your peers within your team and within Klaviyo.

You:

  • Have 5+ years of experience building products that matter and pushing yourself and your team to be better engineers and build a product with passionate advocates
  • Have proven that you can build & scale complex distributed systems including solving problems in sustainable ways, balancing pragmatic development with ideal architecture, breaking through technical obstacles with vigor, and leading teams through crises by working side by side with them in the trenches.
  • Enjoy working with new technologies ranging from the frontend to backend, and are particularly passionate and an expert in multiple stack areas. You show this by having strong and opinionated experience with various technologies and know how to pick the right tool for any job.
  • Love digging into performance and scalability issues to drive breakthrough solutions--whether it's a slow loading UI or too many clicks in a workflow, a database query timing out, or a queue that just won’t drain. You recognize all problems can be solved.
  • Enjoy shipping code early & often in an agile fashion, pairing with product management to craft better software by soliciting feedback from thousands of end users.
  • Like working on a small, autonomous agile teams. At Klaviyo, you will have ownership of features, but you'll collaborate with everyone to make sure we produce the right solution.


Technologies We Use: 


Klaviyo operates a real-time data platform coded in Python built for massive scale on Amazon Web Services (AWS). Engineers come to Klaviyo with experience in a variety of languages and from a number of disciplines. The core Klaviyo platform is comprised of the following components that all engineers are expected to become extremely proficient:


Python, Django, Celery

MySQL, Cassandra, RabbitMQ, Redis

HTML, JavaScript, LESS, Backbone.js, React

Amazon Web Services (EC2, RDS, Aurora, etc.)Terraform, Ansible, Packer, and other DevOps tools


Lead Engineers are expected to bring to Klaviyo subject matter expertise and demonstrate adaptability by continuing to acquire and master new skills, level up all those around them, and research and prototype new technologies and solutions to help scale Klaviyo’s systems and product capabilities.


Problems We’re Solving:


As a high growth startup we look for candidates that can rise to any occasion and seek out new opportunities to make their mark on our product.  The following are examples of exciting projects the engineering team is working on:


Scaling our data processing systems to handle orders of magnitude more data and perform advanced analytics of billions of events in real time by innovating on event-driven data pipelines and building robust distributed data stores


Overhauling our frontend interfaces to dramatically increase information density and capabilities of our analytics and reporting system. We will enable powerful, expressive and flexible querying of our data sets without compromising the ease of use of the experience


Reliably integrating with 10s of thousands of remote API endpoints to process ecommerce data for historical and real-time syncs


Extracting additional insight from our data sources using machine learning and other data science techniques to allow ecommerce marketers to more efficiently perform their jobs and grow their business, and build features into Klaviyo product to make it incredible easy for marketers to follow best practices


About Klaviyo


Klaviyo is a team of people who are crazy motivated by growth.


It’s what we help our customers do: grow their businesses by making it possible and easy for them to use their data to power better marketing.


It’s how we behave as individuals: we’re all deeply passionate about learning.


It’s how we manage our business: we have thousands of paying customers, we’re profitable, and we’re growing insanely fast.


And it’s what our culture is all about. Working at Klaviyo means you’ll work on things you never imagined you would; you’ll grow in ways you didn’t consider possible; and you’ll do the best work of your career with people who are just as motivated and talented as you are.  


Your curiosity has led you this far, so if this sounds like your ideal place to work, please apply!

Boston |

Klaviyo sends over a billion emails a month across thousands of customers. Our Deliverability team is responsible for ensuring that these emails are successfully delivered into our customers’ inboxes. This work involves remediating blacklists, identifying spam traps, working with ISPs to optimize sending rates and working with clients to make sure they send email using best practices. The Deliverability team is currently looking for an experienced professional in email deliverability and compliance. [JC1]

If you have the following skills, please consider joining our team:

  • Thorough understanding of the terminology used in mass email.
  • Thorough understanding of ISP procedures (feedback loops, postmaster pages, etc.).Solid technical foundation on DNS, SPF, DKIM, and DMARC.
  • Thorough understanding of reputation management tools such as ReturnPath and MxToolbox.
  • Understanding of blacklist/spam trap causes and remediation.
  • Understanding of CAN-SPAM and other international email regulations.

In this role, you will often perform the following activities:

  • Maintain strong relationships with our Customers, ISPs, Product Teams, Support and Success teams.
  • Research and keep informed on Deliverability as a Subject Matter Expert for Klaviyo
  • Attend and participate in industry events around Deliverability such as MAAWG, EEC and more
  • Investigate, diagnose and remediate email deliverability issues by working with customers, internal teams and with tier-one support at ISPs, email blacklists and anti-spam technology providers.
  • Build and maintain relationships with ISP postmastersProactively manage IP reputation and deliverability for all of our clients and enforce compliance and best practice sending behaviors.
  • Manage internal reputation management tools and the distribution of Klaviyo IP addresses
  • Provide expert advice and respond to sending concerns out of scope for deliverability (but may be indirectly related)
  • Work closely with product and engineering teams to build out best in class email deliverability tools for customers and employees
  • Create client deliverability reports and present to client findings and recommendations
  • Respond to deliverability related support tickets or customer concerns, delivering best practice to Support team for customer issues, being the expert escalation on specific customer issues
  • Own new client onboarding, domain customization, and off-boarding with regards to deliverability issues
  • Support Klaviyo sales with deliverability best practice advice and solutions for potential new clients
  • Support Klaviyo’s Marketing activities; creating regular content for Marketing from a Deliverability and Compliance basis
  • Execute Webinar(s), Create Video(s), How-To’s and Best Practice articles

What will make you successful

  • You like solving puzzles - enjoy analytical problem solving, conducting in-depth investigations, reviews, and audits into member email sending practices to ensure adherence to program standards
  • You know this market - have knowledge and expertise to translate the data into solutions that will enable companies to execute on their email marketing strategies and aspirations
  • You understand the technology - have a strong knowledge of network protocols and DNS and the technical aspects of email systems and authentication – SPF, DKIM, DMARC.
  • You are fluent in Data – Ability to interpret and troubleshoot email headers and SMTP logs as well as bounce messages and non-delivery reports
  • You love working with customers - an ability to communicate clearly and professionally with technical and non-technical members.
  • Excellent oral and written communication skills.
  • You love to build things - have a desire to build services around your expertise and translate this knowledge to others
  • You are a team player - ability to work on a team, as well as independently, in fast-paced environment and help others succeed

Qualifications and prerequisites

  • 5 years experience of email delivery, ISP or ESP relations or similar experience with large scale email campaigns
  • Technically relevant degree or equivalent professional qualification
  • Flexibility to work unusual hours when needed
  • Must have right to live and work in the US
  • Must have a valid passport and the ability to travel internationally


Boston |

Klaviyo is looking for data science engineers to analyze large data sets (we’re collecting billions of individual actions every month), build models and ship products that enable businesses to grow faster and communicate with their users and customers. Our background as a team is building these models for the Fortune 50 and we want to democratize and open up that technology to everyone.


The ideal candidate has a background in computer science/engineering, math, statistics and and has worked from statistical distributions all the way to a trained and tested model. We use a wide variety of data mining and machine learning algorithms including regressions, decision trees, k-means clustering and neural nets. The right candidate will have deep experience with at least some of these machine learning techniques.


Our goal is always to match the right assumptions and models to the right problem -- they don’t necessarily have to be complex. You should have experience building models that are used by people to make better decisions, we’re focused on shipping early and often. We prefer iterative solutions that are incrementally better to the perfect solution. You should also be able to measure and know what impact your models had on the decisions people made -- e.g. did they outperform the previous best model or a human decision maker?


Our customers have large and varied data sets, you should have experience working with data at scale and with data sets that are sparse, incomplete and may require normalization. You’ll work side by side with our analytics and data teams, which are responsible for storing and aggregating the large quantity of data that comes into Klaviyo.


Our data science team is still in it’s early days, you’ll be a founding member and expected to have a big impact on the direction and products we ship that help our customers learn and grow from their data.

You Will:

  • Have a background in statistics and understand of different distributions and the conditions under which they’re valid (e.g. when is independence necessary and how do you test for this).
  • Have experience with machine learning algorithms such as regressions, decision trees, k-means clustering and neural nets.
  • Understand Bayesian modeling techniques and how those influence the model building process.
  • Have experience cleaning and normalizing data sets as well as create holdout data sets to test and validate models on.
  • Have used data science packages to train and validate models. We use Python, so Pandas, NumPy and SciPy are all packages we’re used to.
  • Have demonstrated a measurable impact based on the models you’ve created. It’s not always easy getting a model correct, we love talking about places we got stuck and work as a team to think through ideas that could unblock us.
  • Not required, but it’s a plus if you’re comfortable with web frameworks (we use Django) to wrap models in APIs that can be consumed by other product teams or our customers directly. Our engineering team makes it easy to deploy and manage services.
  • Not required, but it’s a plus if you have experience with distributed algorithms for analyzing and modeling off of distributed data sets.

You Have:

  • Bachelor’s degree in computer science, applied mathematics, statistics or other relevant quantitative disciplines, or equivalent industry experience.
  • Deep understanding of statistical distributions and linear algebra.
  • Have worked in a data science role for 3+ years professionally or academically and can talk about the projects and techniques you used.
  • Experience with Python and data science packages such as Pandas, NumPy, SciPy, etc.
  • Experience with SQL and databases -- we use both SQL and “NoSQL” databases such as Cassandra.


About Us


Klaviyo is a team of people who are crazy motivated by growth.

It’s what we help our customers do: grow their businesses by making it possible and easy for them to use their data to power better marketing.

It’s how we behave as individuals: we’re all deeply passionate about learning.

It’s how we manage our business: we have thousands of paying customers, we’re profitable, and we’re growing insanely fast.

And it’s what our culture is all about. Working at Klaviyo means you’ll work on things you never imagined you would; you’ll grow in ways you didn’t consider possible; and you’ll do the best work of your career with people who are just as motivated and talented as you are.  


If this sounds like your ideal place to work, drop us a note!

Boston |

This role blends technical skills with strong strategic marketing skills. If you have either worked in marketing or helped customers with their marketing strategy and are also comfortable working with APIs, HTML, CSS and aren’t scared to hop into Terminal once in awhile or geek out with customer’s marketing data and stats -- then we want to hear from you.


This position plays a critical role within the Customer Success team. You will be the single point of contact and advocate for 60-80 customers and over $100K in monthly revenue. As the customer advocate you will devise strategies to help our customers make more money and help effectively manage the technical and business health of our customers. You will do this through proactive account management, dashboard review, issue management, coordinating solutions/priorities, understanding environment/infrastructure, identifying best business practices and managing all escalated customer issues which may occur.


This is a great opportunity for someone with a passion for customer success, and a previous background in email marketing or general marketing solutions.



What You’ll Do:

  • Provide exceptional account management for all requests (business and technical) from assigned customer accounts.
  • Increase email revenue for all your customers
  • Onboard all new clients, so they are set up the “Klaviyo Way”, continually provide strategic advice and guidance, respond to client questions in a timely manner, provide Klaviyo best practices to ensure clients are achieving their business goals.
  • Proactively review a customer dashboard and address any open issues and ensure consistent messaging and appropriate escalation.
  • Possess a deep understanding of the customers goals, mitigation plans, configuration, and revenue achievement plan
  • Obtain and coordinate Klaviyo product roadmap and release schedule with customers, including new features relevant to their environment.
  • Have a deep understanding of the Klaviyo product.
  • Contribute to feedback to Product/Engineering on product improvements to enhance customer engagement based upon their experiences.
  • Work to set priorities and establish a technical health plan for open problems and resolve issues in a timely manner

What You’ll Bring:

  • 3+ years of account management experience.
  • Excellent organizational and project management skills.
  • 2+ years experience in marketing or email marketing .
  • Ability to exercise effective judgment, sensitivity, creativity to changing needs and situations.
  • Proven leaderships skills and problem solving skills.
  • Strong written and verbal communication skills.
  • Familiarity with HTML, CSS, APIs
  • Excellent analysis and debugging skills.
  • Previous programming experience a plus.






Boston |

About Klaviyo

Klaviyo is using technology to reinvent email marketing from the ground up. For too long marketing has been pretty selfish. Companies blast everyone with the same email, not because they think that’s what customers want, but because they don’t have a choice. Klaviyo fundamentally changes the game. Our software ties together everything companies know about their customers, processes massive quantities of data in real-time, and uses it to drive a platform that’s part CRM, part analytics engine, and 100% an email platform that gets results.

Technology has come a long way in the last 15 years, but email hasn’t really changed. We’re here to fix that.


Inbound Business Development (iBD) at Klaviyo

A crucial first step in the sales cycle.  Properly qualifying and learning about a customer's needs is integral to success in a sales role.  We possess a deep understanding of the value of Klaviyo's platform and the positive impact it can have on our prospective customers. We pride ourselves on accountability, effort and working collaboratively to create positive outcomes. We understand that these values are essential to meeting goals and exceeding expectations.


You Will

  • Generate meetings for the sales team through the rapid response to and qualification of inbound leads
  • Learn to effectively identify qualified leads, articulate Klaviyo’s value proposition, and route opportunities properly to the direct sales team
  • Support the success of your peers and provide guidance and support to new BDRs
  • Spend time optimizing the role/process of an iBDR
  • Reflect Klaviyo’s values of accountability and effort
  • Build a plan to reach out to key prospects and have a timeline for execution.
  • Utilize all available resources to reach out to key prospects and establish a line of communication.

You:

  • Have a BA/BS or equivalent
  • Have a strong desire to be in technology sales and have already developed a baseline framework for how to effectively sell
  • Continually seek improvement and are rigorous in your pursuit of it
  • Are excited, motivated, and inspired by exceeding goals
  • Are thoughtful, engaging, energetic, and self-aware
  • Have experience working in a fast-paced environment
  • Focus on details, are a self-starter, and are relentless but professional
  • Have excellent written/verbal communication skills


Klaviyo is a team of people who are crazy motivated by growth.

It’s what we help our customers do: grow their businesses by making it possible and easy for them to use their data to power better marketing.

It’s how we behave as individuals; we’re all deeply passionate about learning.

It’s how we manage our business; we have thousands of paying customers, we’re profitable and we’re growing insanely fast.

And it’s what our culture is all about. Working at Klaviyo means you’ll work on things you never imagined you would; you’ll grow in ways you didn’t consider possible and you’ll do the best work of your career with people who are just as motivated and talented as you are.  

Your curiosity has led you this far, so if this sounds like your ideal place to work, apply now!



No phone calls or agency submissions, please. Candidates from the local area only, no relocation available at this time.

Boston |

Engineering at Klaviyo


Klaviyo is a Boston startup located right in the heart of downtown Boston.  We craft software helping thousands of ecommerce companies to have engaging relationships with hundreds of millions of consumers.  We love tackling tough engineering problems and look for full stack engineers who specialize in certain areas but are passionate about building, owning & scaling features end to end from scratch and breaking through any obstacle or technical challenge in their way. We push each other to move out of our comfort zone, learn new technologies and work hard to ensure each day is better than the last.

You Will

  • Have the chance to wholly own features that thousands of our customers rely on daily to reach 100,000,000+ of consumers to drive their business forward.
  • Work on crafting our highly scalable real-time data pipeline that processes billions of events weekly across data sets growing to petabyte scale.
  • Work on deep analytics system that provides insight into hundreds of terabytes of data.
  • Be empowered to own the mission, technical direction and operations of projects that have immediate impact.
  • Help architect and design robust and high performance data processing and storage systems leveraging new databases to serve different internal and external use cases. Contribute to open source data processing technologies.
  • Contribute to the company as a subject matter expert in multiple areas, constantly pushing yourself to be a better engineer and to level up all of your peers within your team and within Klaviyo.

You

  • Have experience building products that matter and pushing yourself and your team to be better engineers and build a product with passionate advocates.
  • Enjoy working with system software ranging from traditional databases to new data processing frameworks, and are particularly passionate and an expert in multiple stack areas. You show this by having strong and opinionated experience with various technologies and know how to pick the right tool for any job.
  • Love digging into performance and scalability issues to drive breakthrough solutions.
  • Familiar with concurrent programming and have experience building distributed systems.
  • Enjoy shipping code early & often in an agile fashion, pairing with product management to craft better software by soliciting feedback from thousands of end users.
  • Like working on a small, autonomous agile teams. At Klaviyo, you will have ownership of features, but you'll collaborate with everyone to make sure we produce the right solution.


Technologies We Use


Klaviyo operates a real-time data platform coded in Python built for massive scale on Amazon Web Services (AWS). Engineers come to Klaviyo with experience in a variety of languages and from a number of disciplines. The core Klaviyo platform is comprised of the following components that all engineers are expected to become extremely proficient:


Python, Django, Celery

MySQL, Cassandra, RabbitMQ, Redis

HTML, JavaScript, LESS, Backbone.js, React

Amazon Web Services (EC2, RDS, Aurora, etc.)


Problems We’re Solving


As a high growth startup we look for candidates that can rise to any occasion and seek out new opportunities to make their mark on our product.  The following are examples of exciting projects the engineering team is working on:


Scaling our data processing systems to handle orders of magnitude more data and perform advanced analytics of billions of events in real time by innovating on event-driven data pipelines and building robust distributed data stores


Reliably integrating with 10s of thousands of remote API endpoints to process ecommerce data for historical and real-time syncs


Extracting additional insight from our data sources using machine learning and other data science techniques to allow ecommerce marketers to more efficiently perform their jobs and grow their business, and build features into Klaviyo product to make it incredibly easy for marketers to follow best practices


About Klaviyo


Klaviyo is a team of people who are crazy motivated by growth.


It’s what we help our customers do: grow their businesses by making it possible and easy for them to use their data to power better marketing.


It’s how we behave as individuals: we’re all deeply passionate about learning.


It’s how we manage our business: we have thousands of paying customers, we’re profitable, and we’re growing insanely fast.


And it’s what our culture is all about. Working at Klaviyo means you’ll work on things you never imagined you would; you’ll grow in ways you didn’t consider possible; and you’ll do the best work of your career with people who are just as motivated and talented as you are.  


Your curiosity has led you this far, so if this sounds like your ideal place to work, apply here.

Boston |

Engineering at Klaviyo


Klaviyo is a Boston startup located right in the heart of downtown Boston. We craft software helping thousands of ecommerce companies to have engaging relationships with hundreds of millions of consumers.  We love tackling tough engineering problems, and push each other to move out of our comfort zone, learn new technologies and work hard to ensure each day is better than the last.  We seek out full stack engineers who specialize in certain areas but are passionate about building, owning & scaling new features end to end. We relish breaking through obstacles & technical challenges and moving continually faster.


Klaviyo is looking for Lead System Software Engineer to take the ownership of a product area and lead a team of engineers in building and maintaining the product area.

You Will

  • Have the chance to wholly own a major product area that thousands of our customers rely on daily to reach 100,000,000+ of consumers to drive their business forward.
  • Work on deep analytics system that provides insight into hundreds of terabytes of data.
  • Lead a team of three to four engineers in collaboration with product managers and designers to build and maintain the product area.
  • Bring clarity and focus to the team. Be able to drive team to deliver on company goals and self-initiated goals with a timeline.
  • Lead your team by example, working with them to level up their code quality through code reviews and 1on1 mentorship, creating & vetting technical architectures, and writing code yourself that raises the bar for Klaviyo engineering.
  • Be the liaison between team and stakeholders, including customers, other departments like customer support, sales, and marketing.
  • Be empowered to own the mission, technical direction and operations of projects that have immediate impact.
  • Help architect and design robust and high performance data processing and storage systems leveraging new databases to serve different internal and external use cases. Contribute to open source data processing technologies.
  • Advance your technical skills in all facets ranging from new relational database technologies to machine learning and massively parallelized data pipelines.
  • Contribute to the company as a subject matter expert in multiple areas, constantly pushing yourself to be a better engineer and to level up all of your peers within your team and within Klaviyo.

You

  • Have 5+ years of experience building products that matter and pushing yourself and your team to be better engineers and build a product with passionate advocates.
  • Have proven that you can build & scale complex distributed systems including solving problems in sustainable ways, balancing pragmatic development with ideal architecture, breaking through technical obstacles with vigor, and leading teams through crises by working side by side with them in the trenches.
  • Enjoy working with system software ranging from traditional databases to new data processing frameworks,  and are particularly passionate and an expert in multiple stack areas. You show this by having strong and opinionated experience with various technologies and know how to pick the right tool for any job.
  • Love digging into performance and scalability issues to drive breakthrough solutions.
  • Are familiar with concurrent programming and have experience building distributed systems.
  • Enjoy shipping code early & often in an agile fashion, pairing with product management to craft better software by soliciting feedback from thousands of end users
  • Like working on a small, autonomous agile teams. At Klaviyo, you will have ownership of features, but you'll collaborate with everyone to make sure we produce the right solution.


Technologies We Use


Klaviyo operates a real-time data platform coded in Python built for massive scale on Amazon Web Services (AWS). Engineers come to Klaviyo with experience in a variety of languages and from a number of disciplines. The core Klaviyo platform is comprised of the following components that all engineers are expected to become extremely proficient:


 Python, Django, Celery

 MySQL, Cassandra, RabbitMQ, Redis

 HTML, JavaScript, LESS, Backbone.js, React

 Amazon Web Services (EC2, RDS, Aurora, etc.)

 Terraform, Ansible, Packer, and other DevOps tools


Lead Engineers are expected to bring to Klaviyo subject matter expertise and demonstrate adaptability by continuing to acquire and master new skills, level up all those around them, and research and prototype new technologies and solutions to help scale Klaviyo’s systems and product capabilities.


Problems We’re Solving


As a high growth startup we look for candidates that can rise to any occasion and seek out new opportunities to make their mark on our product.  The following are examples of exciting projects the engineering team is working on:


-Scaling our data processing systems to handle orders of magnitude more  data and perform advanced analytics of billions of events in real time by innovating on event-driven data pipelines and building robust distributed data stores


-Reliably integrating with 10s of thousands of remote API endpoints to process ecommerce data for historical and real-time syncs


-Extracting additional insight from our data sources using machine learning and other data science techniques to allow ecommerce marketers to more efficiently perform their jobs and grow their business, and build features into Klaviyo product to make it incredibly easy for marketers to follow best practices


About Klaviyo


Klaviyo is a team of people who are crazy motivated by growth.


It’s what we help our customers do: grow their businesses by making it possible and easy for them to use their data to power better marketing.


It’s how we behave as individuals: we’re all deeply passionate about learning.


It’s how we manage our business: we have thousands of paying customers, we’re profitable, and we’re growing insanely fast.


And it’s what our culture is all about. Working at Klaviyo means you’ll work on things you never imagined you would; you’ll grow in ways you didn’t consider possible; and you’ll do the best work of your career with people who are just as motivated and talented as you are.  


Your curiosity has led you this far, so if this sounds like your ideal place to work, apply here.

Boston |

Klaviyo is seeking to add a driven operations professional to our growing organization. We are looking for highly motivated individuals to lead operational support for our Customer Success organization. This person has a strong analytical mindset, process oriented approach, strong project management skills and entrepreneurial attitude.


Reporting to the Director of Customer Support this individual will be partnering across the organization to identify and influence business decisions and strategy that will help scale our organization and customer engagement.


This role requires a mixture of business acumen, entrepreneurial mindset and technical expertise. Success in the role will require a self-starter with strong initiative and a passion for collaborating with others to solve problems.

Responsibilities

  • Proactively surface, coordinate and drive new ideas to improve business processes, operational systems and policies in order to help the business scale
  • Partner with Customer Success team and cross-functional teams to develop and operationalize strategies to reduce churn, drive up-sell, and increase product adoption
  • Analyze customer behavior, churn, renewals, upsells and customer support issues to drive strategies around retention and customer engagement
  • Interact and support the Customer Success team daily by partnering to improve the effectiveness and efficiency of the team
  • Lead capacity planning to ensure resources are leveraged most effectively; build and maintain headcount, capacity planning and productivity models
  • Develop and refine operational dashboards and proactively monitor KPIs and provide insights and actions to the team
  • Assist with key Customer Success planning activities during planning and budgeting cycle
  • Understand the customer lifecycle and provide insights for driving product adoption and increasing customer satisfaction
  • Ad-hoc analysis as required to aid management decision making

Desired Skills

  • Proficiency Microsoft Office Suite, G-Suite, specifically strong in Excel, Google Sheets and PowerPoint. Experience in Salesforce a plus.
  • Experience with database use and a working knowledge of database platforms, including MySQL
  • Working knowledge of how to gather, analyze and organize data for meeting business requirements
  • Results oriented, attention to detail, ability to prioritize multiple objectives and projects
  • Quick learner, curious and strong analytical skills; ability to dig into data, surface actionable insights and sound decision-making skills
  • Strong problem-solving skills, combined with strong business judgment and ability to present analysis in a clear and compelling manner
  • Exceptional verbal and written communication skills to be able to communicate with customers, peers and management
  • Willing to roll up your sleeves, and pick up the shovel
  • Experience working in high-growth, performance and impact driven environment

Bonus

  •  Experience with developing Web applications in Python, Ruby or PHP.


Boston |

Klaviyo is a Boston startup located right in the heart of downtown Boston.  We craft software helping thousands of ecommerce companies to have engaging relationships with hundreds of millions of consumers.  We love tackling tough engineering problems and look for engineers who specialize in certain areas but are passionate about building, owning & scaling features end to end from scratch and breaking through any obstacle or technical challenge in their way. We push each other to move out of our comfort zone, learn new technologies and work hard to ensure each day is better than the last.


Klaviyo is looking for a Senior Mobile Software Engineer to drive our mobile initiatives. You will own Klaviyo’s own mobile app utilized by our customers as well as the Android and iOS SDKs powering mobile analytics and engagement for many of today’s fastest-growing brands.

You WIll

  • Build SDKs for Android and iPhone to enable brands to instrument and drive engagement and sales with their mobile apps.
  • Modernize the official Klaviyo native app to give Klaviyo customers the key business critical insight they need right when they need it.
  • Pair with our Push Messaging team to build and test best of breed mobile messaging experiences driving real-time engagement to millions of consumers.
  • Help drive the mobile strategy of our customers by having direct customer conversations and ensuring the Klaviyo mobile roadmap gives them what they need.
  • Have the chance to wholly own features that thousands of our customers rely on daily to reach 100,000,000+ of consumers to drive their business forward.
  • Advance your technical skills in all facets ranging from mobile engineering best practices, to full stack development and user experience to data science and leveraging massively parallelized data pipelines. You’re passionate about mobile but will have the opportunity to work on it all.
  • Contribute to the company as a subject matter expert in multiple areas, constantly pushing yourself to be a better engineer and to level up all of your peers within your team and within Klaviyo.

You

  • Have proven yourself building mobile apps that matter and pushing yourself to constantly write better code to build experiences that delight passionate users
  • Possess a strong portfolio of mobile projects and web engineering projects. You’ve built multiple apps in many technologies over time and are eager to share your learnings.
  • Stay on top of the latest mobile technologies, and are particularly passionate and an expert in multiple mobile areas. You show this by having strong and opinionated experience with various technologies, know how to pick the right tool for any job, but understand that the mobile landscape is diverse and fragmented and you may be expected to support other ecosystems.
  • Love digging into performance and scalability issues to drive breakthrough solutions-- whether it's a slow loading web pane or animation, too many clicks in a workflow, or a feature timing out because a backend REST API call is slow. You recognize all problems can be solved.
  • Enjoy shipping code early & often in an agile fashion, pairing with product management to craft better software by soliciting feedback from thousands of end users
  • Like working on a small, autonomous agile teams.
  • At Klaviyo, you will have ownership of features, but you'll collaborate with everyone to make sure we produce the right solution.


Technologies We Use


Klaviyo builds SDKs in Swift for iOS and Java for Android. Klaviyo’s own app has historically only been available on the iPhone but you could change that! Klaviyo’s platform is a real-time system coded primarily in Python built for massive scale on Amazon Web Services (AWS). Engineers come to Klaviyo with experience in a variety of languages and from a number of disciplines. The core Klaviyo platform is comprised of the following components and mobile engineers are expected to integrate with and learn a tremendous amount about the following tech:


HTML, JavaScript, React, LESS, Backbone.js

Python, Django, Celery

MySQL, Cassandra, RabbitMQ, Redis, ElasticSearch

Amazon Web Services (EC2, RDS, Aurora, etc.)


About Klaviyo


Klaviyo is a team of people who are crazy motivated by growth.

It’s what we help our customers do: grow their businesses by making it possible and easy for them to use their data to power better marketing.

It’s how we behave as individuals: we’re all deeply passionate about learning.

It’s how we manage our business: we have thousands of paying customers, we’re profitable, and we’re growing insanely fast.

And it’s what our culture is all about. Working at Klaviyo means you’ll work on things you never imagined you would; you’ll grow in ways you didn’t consider possible; and you’ll do the best work of your career with people who are just as motivated and talented as you are.  


Your curiosity has led you this far, so if this sounds like your ideal place to work, apply!

Boston |

The Senior Community Manager is responsible for representing Klaviyo in the ecommerce and marketing communities, both online and at industry events. S/he will focus on building relationships with individuals already active in those communities, whether they’re bloggers; reporters; consultants; merchants; event organizers, or subject matter experts.

The purpose of this role is to amplify Klaviyo’s message of making precisely targeted and highly effective email marketing and advertising available to all ecommerce businesses, by eliminating the need for any brand to choose between ease of use and powerful features. The ultimate goal of driving and/or maintaining awareness amongst the people in the best position to use and/or advocate for our product.

Key responsibilities include:


Representing Klaviyo across social channels. Engage with members of the marketing and ecommerce communities across social channels; start and participate in key conversations. Launch and manage a FB group. Ensure we have the right tools and systems in place to support and manage this at scale.   


Building close relationships with journalists, bloggers, and other media figures. Know who’s who in the ecommerce and marketing media space. Help connect them with relevant content, resources, and people at Klaviyo.


Speaking at industry events. This includes developing presentations that reflect Klaviyo’s perspective on how to effectively use data to grow online business; managing speaker submissions; and presenting at shows.  


Contributing content to the Klaviyo blog. As an important public face of Klaviyo, you’ll be expected to build your expertise in the ecommerce marketing space -- and then showcase that expertise with contributions to our blog.


Develop and manage social media brands for individual Klaviyos. Work with team members across the company to coach them up on developing a social media presence that supports and reflects the Klaviyo brand. Manage the social media presence for select senior executives. Ensure we have the right tools and systems in place to support and manage this effectively.




Getting Started / Key Outcomes

In the first 30 days, you’ll have:

  • Spoken to at least 10 prospective or current users
  • Gotten up to speed on the product
  • Dove into Klaviyo’s core messaging and positioning
  • Started mapping out key influencers in the ecommerce and marketing communities

Within 90 days, you’ll have:

  • Launched a Klaviyo FB group
  • Built out a presentation you’re ready to take on the speaking circuit
  • Secured at least one interview from a trade publication or blog
  • Begun posting to Klaviyo’s social media accounts with a regular cadence
  • Articulated personal brands for select senior executives and taken on the management of their LinkedIn and Twitter profiles.  
  • Written your first post for the Klaviyo blog Secured your first post as a guest contributor on a third party blog

Within 1 year, you’ll have:

  • Spoken at 4 industry events
  • Hit a regular cadence of 2 bylines and 5-6 mentions or quotes per month
  • Increased Klaviyo’s social media interactions by 3x


About You


You view marketing as a two-way conversation between companies and the people who might or do buy from them. You can wax poetic about how so many marketers muck that up by not giving enough consideration to the people at the other end of their messages. A background in email marketing is helpful, but only if you consider “blast” a four-letter word. You’re excellent at building relationships with your fellow humans; it’s not uncommon for you to hear “I can’t believe you remember that!” when getting back in touch with someone. You understand how to build those relationships at scale through social media. You’re an exceptional written and oral communicator. And most of all, you’re passionate about helping online companies grow faster -- and specifically, passionate about fueling that growth by teaching them how to use data to build stronger relationships with their customers.


About Us


Klaviyo is a team of people who are crazy motivated by growth. It’s what we help our customers do: grow their businesses by making it possible and easy for them to use their data to power better marketing. It’s how we behave as individuals: we’re all deeply passionate about learning. It’s how we manage our business: we have thousands of paying customers, we’re profitable, and we’re growing insanely fast.  And it’s what our culture is all about. Working at Klaviyo means you’ll work on things you never imagined you would; you’ll grow in ways you didn’t consider possible; and you’ll do the best work of your career with people who are just as motivated and talented as you are. If this sounds like your type of place to work, drop us a note!

Boston |

This position is responsible for marketing activities that enable our sales team to close new business; support our product team through regular market and competitive intelligence; and empower our success team to better understand and service Klaviyo customers. This is a central role responsible for developing and driving core components of Klaviyo’s go-to-market strategy.

Your responsibilities include:


Competitive intelligence. Segment and track the ecommerce marketing automation vendor landscape. Regularly monitor, report on, and develop training around our competitors’ positioning; go-to-market efforts; products; and market share.


Audience segmentation and research. Refine and develop materials around our buyer personas. Regularly collect quantitative and qualitative data around customer profiles; motivations; perceptions; and business value. Synthesize and distribute your research to different teams across the organization.


Sales enablement. Ensure our value proposition is communicated in a clear, compelling and consistent way across our sales and marketing efforts.  Make sure key use cases and core benefits are communicated clearly in all product-specific messaging. This includes things like introductory demos for prospects; case studies; sales collateral; and internal training sessions.


Positioning and messaging development. Translate your understanding of the competitive landscape, the audience, and our sales challenges and opportunities into compelling, segment-specific messaging. Ensure our core messaging is communicated regularly to your peers in marketing and across the organization; and reflected accurately across all external-facing materials.


Program management.  We supplement a strong inbound channel with select direct marketing programs, including search marketing; retargeting campaigns; and sponsorships. You’ll be responsible for directing efforts across these channels to ensure they are cost-effective and reliably supporting our new customer acquisition efforts.  


Your success requires close collaboration with the sales, customer success, and product management team. As the “command center” for the rest of the sales and marketing team, your ultimate success will be measure by MRR. But there are several leading indicators you’ll be in a position to influence, including the lead conversion rate and high value customer retention.


Getting Started / Key Outcomes

In the first 30 days, you’ll have:

  • Gotten up to speed on our product.
  • Done an initial analysis of the competitive landscape.
  • Contributed your first blog post.

Within 90 days, you’ll have:

  • Overhauled internal sales collateral for our top 5 competitors.
  • Refined our core messaging framework and translated it into sales-facing collateral.
  • Revamped & presented the Klaviyo pitch deck to the sales, marketing and success teams.
  • Developed an initial lead nurturing plan.

Before you hit your first year anniversary, you’ll:

  • Released new product messaging matching our customer profiles, and ensured it is reflected across the Klaviyo website.
  • Built out a directory of sales assets, including battlecards; case studies; and testimonials.
  • Built out an automated, segment-specific lead nurturing stream.
  • Hit a regular monthly cadence of lead reactivation and/or conversion campaigns in partnership with sales.


About You


You pay close attention to the details, and you’re also deadline-driven. You rock at organizing and motivating your peers across the company to drive home the value we deliver to our customers. You have exceptional communication skills, both written and face-to-face: you’re succinct but compelling, and understand how to get the point across. You’re an exceptional analyst: you’re not just comfortable with qualitative AND quantitative data, you know how to tell the story behind it. You love getting into the details, but you’re a big picture thinker. You’re familiar with marketing automation and email marketing. And most importantly, you have a sincere passion for helping ecommerce founders and marketers grow their businesses by improving the way they target and communicate with their customers.

Boston |

Our small but talented Klaviyo Customer Academy Team is looking for an additional writer to join the team. In this role you’ll be writing a variety of content - from technical how-to articles, to training content to long-form guides to help our customers understand the business and product elements that can be brought together to bring them great success. We’re not going to call this a “Technical Writer” because you will do so much more, but breaking down technical components into bite-size understandable chunks for our customers is a big part of this job. You’re going to have some fun with it as well as we want to completely transform the way technical information is delivered and provide video, training and other assets to help our customers grow successful ecommerce businesses.

The type of person we are looking for:

  • Excellent overall writing skills in a number of different styles/tones
  • Impeccable spelling and grammar
  • A deep understanding of consumers and what motivates them online
  • Great research, organizational, and learning skills
  • High comprehension of technology and writing to help customers understand our technology
  • An understanding of formatting articles on the web
  • Passionate learner who can take complex information and turn it into easy-to-understand copy

Responsibilities:

  • Create clear and concise how-to articles about how to use the Klaviyo product
  • Write scripts for training videos and other content for our Customer Success websites (our Help Center and Academy sites)
  • Maintain and update existing help center articles based on inbound requests, product updates and develop regular maintenance process
  • Work with Product teams to understand upcoming updates and changes and manage  
  • Edit content produced by other members of the team
  • Maintain and improve on our customer communication style guides for each of our web properties

One more for the road:

  • Link us or send us the best thing you have ever written.


Boston |

Customer Success Specialists at Klaviyo are a critical part of our future success. We take the success of our customers incredibly seriously and we are looking for only the best people out there. We are very interested in individuals who have a track record of finding creative solutions to unique problems, and who will thrive in challenging situations.

You Will

  • Provide high-quality product support for Klaviyo customers.
  • Deliver effective customer support to our rapidly growing customer base.
  • Deliver solutions to both technical and non-technical end users while also supporting a wide range of technologies.
  • Resolve escalated customer complaints without the need for team lead intervention.
  • Document troubleshooting and problem resolution steps.
  • Participate in providing training to customers as required.

You Have

  • 2+ years in a high volume customer facing role.
  • Written and verbal skills; excellent phone manner.
  • Familiar with web works, networking, and software products.
  • Familiar with DNS, IPs and other networking concepts.
  • Familiar with APIs (Not required, but icing on the cake).
  • Experience with Email Marketing or E-Commerce.


225 Franklin Street, 10th Floor
Boston, MA 02111

Read About Us

Engineering Spotlight
February 7, 2018
Talent on the Move
December 1, 2017
Office Tours
April 4, 2017
Talent on the Move
February 17, 2017
Talent on the Move
July 15, 2016

Blog

May 22, 2018
As your company passes about 120 people, previous communication models and transfers start to break down. You can be working hard to build a great product and engineering culture, and finding that communicating your team’s work to the rest of the company is getting harder and harder. For this reason, it’s essential for your team to come together and share work broadly. A science fair is an effective solution to showcase, celebrate, and educate employees around the work done by engineering.It...
May 18, 2018
Embedding content on a customer’s site is a privilege. You have the direct means to change every single visitor’s experience. This should not be taken lightly.Last month Klaviyo released an overhaul of our signup form feature set to make it easy to embed effective signup forms to our customers’ websites. This was an exciting product to develop with a host of interesting challenges.Most ecommerce websites have popup or flyout signup form modals that appear to the user and ask them to signu...
May 2, 2018
Klaviyo likes having T-shaped engineers with broad technical skills and experience and subject matter expertise in certain dimensions. Although we don’t have job openings titled “Full Stack Engineer” we do recruit for the skillset and often see candidates apply with backgrounds or aspirations of being Full Stack Engineers. These candidates may have come from an accelerator program, been self taught, or have a formal computer science degree or online curriculum under their belt. Many have s...
May 1, 2018
Klaviyo’s event processing pipeline(AKA 🤔the thinking pipe), tasked with ingesting billions of events from various sources every week, faces data consistency challenge like any other stream processing pipeline. While occasional failures in the streaming process are nicely handled by a general purpose wrapper where failed tasks are retried in place and then automatically replayed (from Elasticsearch) if failure persists, peculiar failure cases that lead to data inconsistency between data sto...
March 9, 2018
Building a Video Wall for Data-Driven StartupsA design mockup I did with 9 old office monitors and limited space.I first knew that Klaviyo was a special company when Andrew Bialecki, our fearless leader, came to me in my first week and asked me to build a massive video wall to support eight to nine dashboards of data for Black Friday and Cyber Monday — the most important days of the year for Klaviyo and our customers. In the spirit of this unique request it was obvious that I needed to ta...