101 - 250 employees
Series B
AdTech
Big Data & Analytics
eCommerce & Marketplaces
Marketing & Sales Tech
SaaS

Klaviyo Company Overview

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; 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!

 

Jobs at Klaviyo

 
42 Jobs Listed
Clear Filters
Boston
The Community Events Manager is the creative and strategic lead behind our many offline events, including our customer workshops and cornerstone annual event, Klaviyo:BOS. Klaviyo:BOS (pronounced Klaviyo Boston) is our largest gathering (500+ attendees) of the Klaviyo community last year we had 3 conference tracks, 30+ talks, and a super fun afterparty. You will own the planning, budget, entire project plan, logistics, promotional plans, and execution activities of all offline events and work with the Marketing team (and outside consultants) to create highly engaged and exciting experiences...
Marketing
Boston
We are looking for a Senior Talent Acquisition Professional to join our growing recruiting team. As part of People Operations, you will have the chance to build relationships with some of the most talented people in the Boston tech industry! You will have a direct impact, contributing to the breakneck growth of Klaviyo, affecting the culture and business tremendously with the hyper-intelligent, driven and empathetic people you bring into the company! You'll own your recruiting numbers, hitting targets and drawing insights from analytics to make our hiring process smarter and more efficient....
Corporate Functions
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...
IT/Systems/Networking
Boston
We are looking for a Senior Technical Talent Acquisition Professional to join our growing recruiting team. As part of People Operations, you will have the chance to build relationships with some of the most talented people in the Boston tech industry! You will have a direct impact in contributing to the breakneck growth of Klaviyo, affecting the culture and business tremendously with the hyper-intelligent, driven and empathetic people you bring into the company! You'll own your recruiting numbers, hitting targets and drawing insights from analytics to make our hiring process smarter and more...
Corporate Functions
Boston
Mission The Klaviyo Academy team provides critical how-to guides and resources for the Klaviyo customer base. Growing ecommerce and online service companies turn to us to help them better communicate with their customers. As a technical writer at Klaviyo, you cultivate expertise in our customers and their needs, learn how ecommerce businesses work inside and out, and translate that into helpful guides, videos, and other material that helps our customers grow. Core responsibilities Identify documentation and guide needs Youll work with other tech writers, as well as members of...
Customer Success
Boston
Mission The Starter CSM will establish a team focused on nurturing the growth and retention of Klaviyos smallest customers. You thrive on data. Supporting a customer base of thousands of emerging ecommerce brands brands, youll identify segments that need support and development, and work with the team to drive adoption and success for those customers. We are looking for CSMs who are passionate about providing the best experience to customers who are scaling their businesses with Klaviyo. This is a great opportunity for someone with a passion for customer success, strong technical skills,...
Customer Success
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 isnt the people; its 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. Thats where Klaviyo comes in. Klaviyo helps marketers drive more sales with super-targeted, highly relevant email, Facebook, and...
UX & Design
Boston
Klaviyo is growing fast and we have openings for all skill levels across all of our teams. Learn more about our engineering culture at https://klaviyo.tech 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...
Software Engineering/QA
Boston
Klaviyo IT is looking for a driven, technology enthusiast to help grow our IT team. We are a small operation of IT generalists that support our internal employees in their ever scaling technology needs to continue to grow Klaviyo's business. The IT Specialist would be responsible for day to day support in a range of technologies which include Conference Room AV solutions, a growing list of SaaS applications (Gmail, Slack, Zoom, Robin...), Mac/Windows/Linux laptops, and many other cool (and fun) experimental technologies for the modern office. Responsibilities Respond to support requests...
IT/Systems/Networking
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 taking on 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...
IT/Systems/Networking
Boston
Klaviyo is looking for a talented Onboarding Specialist to join our fast growing organization! As a member of the Learning & Development team at Klaviyo, this individual will work as the face of Klaviyo, organizing, scheduling and facilitating all new hire orientation sessions. Additionally, this individual will work with L&D members across the organization to schedule developmental workshops for all employees. A new hire onboarding specialist helps introduce people to the companys culture and operations. Their role is to bring new employees into the companys ecosystem and make...
Corporate Functions
Boston
Klaviyo is growing fast and we have openings for all skill levels across all of our teams. Learn more about our engineering culture at https://klaviyo.tech 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 taking on 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...
Software Engineering/QA
Boston
Design at Klaviyo: Klaviyo is a startup located in the heart of downtown Boston. We build software that helps tens of thousands of businesses have more relevant and personal relationships with billions of consumers. We are a product driven company and over invest in making beautiful, efficient and fast workflows that help our customers accomplish what was previously unimaginable. 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. What youll be doing: Talking to and working with customers constantly...
UX & Design
Boston
Channel Customer Success Managers (cCSMs) at Klaviyo play a critical role in developing and supporting our agency partner ecosystem. Our Partner Program mission is to deliver exceptional assistance to our partners and their customers with the highest level of quality in both product knowledge and account management skills, and in the process, consistently meet and exceed their expectations. We are looking for a cCSM who is passionate about providing the best experience to agency partners and their end clients as they scale their businesses with Klaviyo. Responsibilities: Establish yourself...
Customer Success
Boston
Klaviyo is looking for a operations professional to help support our marketing organization. This position works with the Director of Performance Marketing and Demand Generation Marketing Manager to make sure that the wider marketing team has the tools, data, reports, and processes they need to be successful. This is an exciting opportunity to join a passionate, collaborative team at a high-growth startup. Core responsibilities include: Marketing Infrastructure. As a primary owner of the marketing infrastructure, you are constantly aware of rough edges, inconsistencies, and data...
Marketing
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 thats what customers want, but because they dont 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 thats part CRM, part analytics engine, and 100% an email platform that gets results. Technology has come a long way in the last...
Sales & Business Development
Boston
Were looking for a driven, self-motivated individual to own our strategic relationships with eCommerce platform partners and other tech solution providers in our ecosystems. In this role, youll wear many hats: from relationship management to product marketing to demand generation. On all fronts, youll be playing a key role in helping our business grow. Youll be charged with identifying the opportunities that make sense for Klaviyo; then planning, executing, measuring and optimizing these marketing programs. Youll also be counted on to educate and support our platform partners: making sure...
Marketing
Boston
Our community of agency and tech platform partners is one of the most valuable go-to-market avenues for Klaviyo. From co-marketing activities to organic word-of-mouth to direct lead referrals, our partners are a critical component to our success. As the Director of Partner Marketing, you will oversee all marketing activities to and with our partners. Your specific areas of responsibility include: Identifying, prioritizing, and directing co-marketing campaigns. This includes online campaigns, as well as co-hosted events and meetups. Were never short on invitations to participate in...
Marketing
Boston
A Product Recruiting Coordinator at Klaviyo is passionate about building a system that will find the best candidates in the world in Product Management and Design and bringing them to Klaviyo in a fast, efficient and scalable way. Our employees are driven, capable and ambitious. They could work anywhere but they choose to work at Klaviyo because of the difficult problems that we solve every day, the caliber of colleagues they collaborate with and the ownership opportunities they are given. Recruiting at Klaviyo What does a Recruiter at Klaviyo do? Execute the process - we...
Product Management
Boston
Klaviyo is looking for a director to lead our support team. Our customers are highly driven and motivated entrepreneurs and marketers at high growth brands who want counterparts at Klaviyo comfortable talking about the nuances of our product and marketing strategy. Every Klaviyo that joins our support team is taught and tested on our product, marketing strategies and our voice -- its critical that were experts. We want to wow them from the first time they find out about us to the day they retire from their business -- and everyone at Klaviyo is responsible for delivering that with our...
Customer Success
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. If you have the following skills, please consider joining our team: Thorough understanding of...
Customer Success
Boston
A Product Manager at Klaviyo is passionate about identifying, specing and shipping solutions to solve customer problems. Our customers are businesses that want to grow. They know there is power in using their data to communicate with their customers in more relevant and targeted ways, but the existing platforms in the market have always been too hard to use or too expensive to take advantage of. Klaviyo customers are passionate, hard-working, ambitious and have incredibly high standards. They expect to deliver the best experiences for their customers and expect us to deliver the best...
Product Management
Boston
Klaviyo is looking for data scientists to analyze large data sets (were collecting billions of individual actions every month), build models and ship products that enable businesses to grow faster and communicate with their 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 data science, statistics and machine learning and has done work ranging from exploratory analysis to training and deploying models. We use a wide variety of data mining and machine...
Data Science / Machine Learning
Boston
Customer Success Managers (CSMs) at Klaviyo are a critical part of our success and the success of our customers. We take the success of our customers incredibly seriously. Our mission is to deliver exceptional assistance to our customers with the highest level of quality in both product knowledge and communication skills, and in the process, consistently meet and exceed customer expectations. We are looking for CSMs who are passionate about providing the best experience to customers who are scaling their businesses with Klaviyo.This is a great opportunity for someone with a passion for...
Customer Success
Boston
Engineering at Klaviyo Klaviyo is a fast-growing and profitable startup located in the heart of downtown Boston. Our mission is to use data science to help ecommerce brands grow faster. We love taking on tough engineering problems such as building real-time analytics systems to process billions of events every day. We believe in ownership and autonomy and look for engineers who are passionate about building, operating & scaling features end to end and breaking through technical challenges to have outsized impact on our customers and on Klaviyo. We pride ourselves in shipping...
IT/Systems/Networking
Boston
Information Security & Security Engineering at Klaviyo: Klaviyo is a fast-growing and profitable startup located in the heart of downtown Boston. Our mission is to use data science to help ecommerce brands grow faster. We love taking on tough engineering problems such as building real-time analytics systems to process billions of events every day. We believe in ownership and autonomy and look for engineers and technical leaders who are passionate about building, operating & scaling features end to end and breaking through technical challenges to have outsized impact on our...
IT/Systems/Networking
Boston
Product Management at Klaviyo: The product team at Klaviyo is passionate about identifying, specing and shipping solutions to solve customer problems. Klaviyo is a startup located in the heart of downtown Boston. We build software that helps tens of thousands of businesses have more relevant and personal relationships with billions of consumers. We are a product driven company and over invest in making beautiful, efficient and fast workflows that help our customers accomplish what was previously unimaginable. We push each other to move out of our comfort zone, learn new technologies...
Product Management
Boston
Klaviyo is looking for data scientists to analyze large data sets (were collecting billions of individual actions every month), build models and ship products that enable businesses to grow faster and communicate with their 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 data science, statistics and machine learning and has done work ranging from exploratory analysis to training and deploying models. We use a wide variety of data mining and machine...
Data Science / Machine Learning
Boston
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. Our data science team is analyzing large data sets (were collecting billions of individual actions every month) and building products that enable our customers to grow faster and communicate more effectively with their customers. Were looking for machine learning engineers to develop...
Data Science / Machine Learning
Boston
Onboarding Experts at Klaviyo are a critical part of our future success. We take the success and happiness of our customers incredibly seriously. Our mission is to deliver exceptional assistance to our customers in their first 30-45 days setting up Klaviyo with the highest level of quality in both product knowledge and communication skills and, in the process, consistently meet and exceed customer expectations. We are looking for an Onboarding Specialist who is passionate about providing the best onboarding experience and support to customers who are scaling their businesses with Klaviyo.As...
Customer Success
Boston
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. Our data science team is analyzing large data sets (were collecting billions of individual actions every month) and building products that enable our customers to grow faster and communicate more effectively with their customers. Were looking for data science software engineers to...
Data Science / Machine Learning
Boston
Job Brief: We are looking for a talented Sales Manager to join our fast growing Klaviyo Sales organization! In this role as a Sales Manager, you will lead a team of sales professionals and be responsible for increasing our client base through inbound, outbound and partner channels focused on the upper SMB and Mid Market ($10M - $500M Revenue). The Sales Manager recruits, trains, develops and supports new and existing Sales Representatives to ensure that they meet specific new business goals on a weekly, monthly, quarterly and annual basis. The role will report into the Director of...
Sales & Business Development
Boston
Job Brief: We are looking for a talented Sales Leader to join our fast growing Klaviyo Sales organization. The Sales Manager will be responsible for leading a team of 6+ Account Executives that sell into the SMB market. This includes hiring, training, forecast management, performance analysis, and day-to-day coaching/talent development. Our SMB team is growing incredibly fast and we need to keep up with the inbound demand. This team will close 100% of their business from inbound leads and work with companies doing less than $1m in annual revenue. Responsibilities: Hire,...
Sales & Business Development
Boston
Our small but mighty creative team in Marketing is looking for a Front-End Web Developer who wants to be bold and push boundaries. Working in partnership with designers and other development resources, youll take an active role in the creative process by working collaboratively - from the very beginning of projects - participating in brainstorms, wireframing, & UI discussions. Youll be an important part of bringing beautiful and interactive web experiences to life, including reports, ebooks, data visualizations, landing pages, and pages on the Klaviyo website and blog....
Marketing
Boston
The payroll specialist will play an integral role on the Finance team at Klaviyo. This employee will process and analyze multi-state U.S. payroll for 200+ exempt and non-exempt employees on a semi-monthly basis. This individual will report to the Manager of Accounting, and will also support the People Operations team on a regular basis. This person must have in depth knowledge of payroll wage and hour laws, federal, state, and local tax laws, pre and post-tax benefits, and 401K plans. This position requires attention to detail, organization, and effective collaboration through all levels of...
Corporate Functions
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 thats what customers want, but because they dont 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 thats part CRM, part analytics engine, and 100% an email platform that gets results. Technology has come a long way in...
Sales & Business Development
Boston
Product Experts at Klaviyo are a critical part of our future success. We take the success of our customers incredibly seriously. Our mission is to deliver exceptional assistance to our customers with the highest level of quality in both product knowledge and communication skills, and in the process, consistently meet and exceed customer expectations. We are looking for a Product Expert who is passionate about providing the best support to customers who are scaling their businesses with Klaviyo. We are very interested in individuals who have a track record of finding creative solutions to...
Customer Success
Boston
About Klaviyo Klaviyo is one of Bostons hottest startups. We craft software helping thousands of ecommerce companies to have engaging relationships with hundreds of millions of consumers. We love taking on tough engineering problems and look for customer success engineers who also like staying close to customers. 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. Success Engineering Were looking for a customer-facing engineer who loves talking to customers, understanding their needs and solving...
Customer Success
Boston
Channel Managers at Klaviyo are given a tremendous opportunity to have a huge impact on developing our agency partner ecosystem. Their efforts lead to accelerated growth for both our partners and Klaviyo while also furthering their own careers. At Klaviyo, Channel Managers pride themselves on being marketing and product experts who focus on helping our agency partners grow their clients business thereby setting up our agency partners for long-term success. At Klaviyo, our Channel Managers support the full life cycle of our agency partners -- from qualification to product adoption and...
Sales & Business Development
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 thats what customers want, but because they dont 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 thats part CRM, part analytics engine, and 100% an email platform that gets results. Technology has come a long way in...
Sales & Business Development
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 thats what customers want, but because they dont 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 thats part CRM, part analytics engine, and 100% an email platform that gets results. Technology has come a long way in the last...
Sales & Business Development
Boston
Engineering at Klaviyo Klaviyo is a fast-growing and profitable startup located in the heart of downtown Boston. Our mission is to use data science to help ecommerce brands grow faster. We love taking on tough engineering problems such as building real-time analytics systems to process billions of events every day. We believe in ownership and autonomy and look for engineers who are passionate about building, operating & scaling features end to end and breaking through technical challenges to have outsized impact on our customers and on Klaviyo. We pride ourselves in shipping...
IT/Systems/Networking
225 Franklin Street, 10th Floor
Boston, MA 02111

Read About Us

Engineering Spotlight
August 29, 2018
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

March 25, 2019
This is the third part of our “Counting” blog series. In the previous posts, we described what problem we are trying to solve and the technical challenges we face. In this post, we will go deep into the lessons learned from using Apache Flink, especially around performance optimization. This blog post requires knowledge of basic stream processing concepts and Flink usages.Klaviyo’s workloadKlaviyo has a unique stream processing workload that has high fan-out with a high cardinality datase...
March 1, 2019
Every September at Klaviyo we start to prove our platform is ready for a surge of traffic during the Black Friday and Cyber Monday shopping holidays, consisting mainly of retailers sending out promotions and consumers making purchases. This surge of traffic is both an egress of over a billion email messages and an ingress of billions of ecommerce actions that Klaviyo tracks (like customers making purchases, viewing products, etc.). The combination sums up to a roughly 5–7x sustained load incre...
February 22, 2019
Klaviyo Engineering has had a long and incredibly successful history with Graphite instrumentation — we love the technology so much we’ve even built video walls showcasing our Grafana dashboards. We rely on it for deep visibility across our workloads for common use cases such as system throughput, latency, and overall performance. Although we started with a fairly vanilla Graphite and Statsd server, Klaviyo’s growth over the years forced an evolution of our backend infrastructure provi...
February 1, 2019
One clever little piece of software we’ve built here at Klaviyo is an open-source slack bot we call “The Hat Man.” This is a story about The Hat Man’s inception.When I joined Klaviyo in February of 2017, there were eight engineers total — a far cry from the 30+ engineers on our engineering team now. We had just started using AWS auto-scaling groups for many of our workloads, and started running more servers as we grew. In order to keep code in sync across all of our boxes, we deplo...
January 31, 2019
2018 was a record setting year for Klaviyo and also a year of intense growth for Klaviyo engineering as we scaled our product and our teams to new heights. On the product side, we were excited to increase our pace of shipping compelling new features and innovations. These include everything from launching brand new offerings such as our form builder, a best in class way to easily embed personalizable forms on customers’ sites, to innovative enhancements such as supporting geolocation as a firs...