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

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

 
52 Jobs Listed
Clear Filters
Boston
The Klaviyo Academy team provides critical how-to guides and other 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, youll cultivate an understanding of our customers and their needs, learn how ecommerce businesses work inside and out, and translate that into helpful guides, videos, API documentation, and other material that helps our customers grow. How You Will Make A Difference: Hone your research and interview skills to identify documentation and guide...
Customer Success
Boston
We are looking for someone who geeks out on all things deliverability and has a passion for helping customers navigate this space. The deliverability team is responsible for ensuring our customer base has the best chance to successfully inbox and to maintain all infrastructure elements with the highest reputation possible. 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 still being formed and we plan on growing this function...
Customer Success
Boston
The Video Producer is responsible for overseeing the production of high-quality marketing video and audio content that helps Klaviyo and its customers grow their businesses. S/he will manage video and audio content projects from start to finishfrom ideation to storyboarding to filming to editing to collaborating on distribution plans to measuring performance. Youll creatively tell stories through both short and long-form video and audio content (social ads/teasers, show-based content, etc.), and youll work closely with Klaviyos content strategists and the creative team to turn concepts...
Marketing
Boston
The Partnerships team mission is to help drive Klaviyos Owned Marketing vision forward by building & deepening relationships with the best advisory firms and technology companies in the world. Our marketing agency and system integrator partners are trusted advisors to high growth brands of all sizes and around the world. In turn, these partners rely on Klaviyo to help them deliver exceptional experiences to these brands--whether through direct referrals or through close collaboration with Klaviyo on the brands use of Klaviyo software. The Agency Development Rep plays a crucial role on...
Sales & Business Development
Boston
Were looking for a problem solver who loves talking to customers, understanding their needs and digging into technical problems. This position is for someone who loves to dive into code to create new solutions or resolve customer problems. 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 technical product experts who also like staying close to customers. We push each other to move out of our comfort zone,...
Customer Success
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 We love tackling tough engineering problems and look for Senior 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...
Software Engineering/QA
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 Site Reliability Engineering (SRE) is what you get when you treat system operations as a software engineering problem. The mission of the Site Reliability Engineering team is to ensure uninterrupted service for Klaviyo customers and act as a force multiplier for Klaviyo product teams to deliver better software faster. The SRE team builds foundational backend services as well as tooling and automation to allow product teams to release...
IT/Systems/Networking
Boston
We are looking for a Senior Technical Talent Acquisition Professional to join our growing recruiting team. As part of the Talent Acquisition Team, 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...
HR, Finance, & Operations
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 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. Senior Engineers demonstrate adaptability by...
IT/Systems/Networking
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 We love tackling tough engineering problems and look for Senior 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...
Software Engineering/QA
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 Site Reliability Engineering (SRE) is what you get when you treat system operations as a software engineering problem. The mission of the Site Reliability Engineering team is to ensure uninterrupted service for Klaviyo customers and act as a force multiplier for Klaviyo product teams to deliver better software faster. The SRE team builds foundational backend services as well as tooling and automation to allow product teams to release...
IT/Systems/Networking
Boston
We are looking for a Senior Talent Acquisition Professional to join our growing recruiting team. As part of Talent Acquisition Team, 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...
HR, Finance, & Operations
Boston
Klaviyo is a product-driven company, and were passionate about user experience and design. The Senior 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...
UX & Design
Boston
Klaviyo is looking for Senior Data Scientists to join our team which is still in its early days. Youll have a big impact on our direction and how we operate. Youll be central to upfront research and shipping products that help our customers learn and grow from their data. 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 learning algorithms. The right candidate will have both a solid fundamental understanding and deep...
Data Science / Machine Learning
Boston
The Senior Content Strategist is responsible for producing high-quality, relevant, and engaging content to help Klaviyo and its SMB and mid-market customers grow their businesses. S/he will consistently create exceptional, audience-centric content while helping others to create the same high-quality level of content. Youll become an expert in ecommerce marketing, and youll create both short-form and long-form content in a variety of formats (articles, reports, blog posts, videos, etc.) and for multiple distribution channels (blog, website, etc.). Youll collaborate closely with fellow...
Marketing
Boston
AEs at Klaviyo are given a tremendous opportunity to have a huge positive impact on Klaviyos prospects, on Klaviyos 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...
Sales & Business Development
Boston
Klaviyo is looking for a Security Risk and Compliance Manager to take ownership of identifying and evaluating security risk, building and developing controls, identifying areas for improvement, and helping mature the information security and privacy programs. Youll be in-charge to ensure we have appropriate controls in place that are designed appropriately and operating effectively as be a valued member of the Security and Trust team at Klaviyo. How you will make a difference: Develop and manage complex controls frameworks. Knowledge of, or experience working with Cloud technologies/...
Software Engineering/QA
Boston
Klaviyo has a unique take on Sales Engineering. While most companies hire SEs to give demos, fill out questionnaires, and explain complicated setups, that makes us yawn. We built a product that anyone can use and we have smart sales reps who are true product experts. So what does our Sales Engineering team do? We work directly with a small percentage of potential customers, alongside our sales team, and use these engagements as an opportunity to learn, prototype, and ship meaningful improvements to the Klaviyo experience. What does this mean practically? Well, here are a few examples of...
Sales & Business Development
Boston
We are looking for a Talent Acquisition Professional to join our growing recruiting team. As part of the Talent Acquisition team, you will have the chance to build relationships with some of the most talented people in the Boston tech industry! You will have 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 help bring into the company! Youll gain skills, achieve in ways you hadnt thought possible all while having fun! Sound good? Read on! How you will make a difference...
HR, Finance, & Operations
Boston
We are looking for a Talent Acquisition Professional to join our growing recruiting team. As part of the Talent Acquisition team, you will have the chance to build relationships with some of the most talented people in the Boston tech industry! You will have 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...
HR, Finance, & Operations
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
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
Klaviyo is a product driven company, and were 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,...
UX & Design
Boston
We are looking for a talented Sales Development leader to join our fast growing Klaviyo Sales organization. The Outbound BDR Manager will be responsible for leading a team of Business Development Representatives to effectively prospect into target accounts and develop pipeline for the direct sales team. This includes hiring, goal setting, performance analysis, and day to day coaching and talent development. This role will be instrumental in developing Klaviyos future sales leaders as well as ensuring sustained business growth from the outbound channel. How you will make a difference: Hire,...
Sales & Business Development
Boston
Onboarding Specialists 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 exceed our customers expectations when getting them up-and-running with Klaviyo. We are looking for an Onboarding Specialist who is passionate about providing the best onboarding experience and support to our West Coast/APAC territory customers. As an Onboarding Specialist, you will be the first point of contact with new Klaviyo customers, guiding them through their first 30-45 days of setup with the Klaviyo product and the...
Customer Success
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
Were looking for a Project Manager to join our small but mighty Creative Team in Marketing. Youll keep us organized - overseeing the project and production schedules for the innovative creative campaigns the team works on for our customers and internal clients. Youll have an in depth understanding of the deliverables, to-dos, dependencies, resources, and process for the teams projects and ensure we can support our internal clients by delivering high-level creative work on-time. How you will make a difference: Project timelines and planning. Youll set/improve our project management process...
Marketing
Boston
As a Manager, Customer Success you will manage one of our Customer Success teams and be responsible for interviewing, hiring, evaluating, training, coaching, and leading a team of new and established Customer Success Professionals (Support, Onboarding Specialists or Customer Success Managers) in a fast-paced and rapidly changing environment. You will work closely with the other Customer Success Team-Leads and the Director of Customer Success to help build a team of highly successful Customer Success Professionals who are able to execute exceptional customer service to our rapidly growing...
Customer Success
Boston
The mission of the Klaviyo Onboarding Team is to set our newest customers up for success. We take the time to get to know our customers challenges and dreams so that we can empower them to optimize Klaviyo to take them even farther than they imagined. As a Manager, Customer Success - Onboarding you will manage one of our Customer Success teams and be responsible for interviewing, hiring, evaluating, training, coaching, and leading a team of new and established Customer Success Professionals (Support, Onboarding Specialists or Customer Success Managers) in a fast-paced and rapidly changing...
Customer Success
Boston
The Mission of the Manager of Customer Operations will be to drive the effectiveness and efficiency of our Customer Success team. You will report into the Manager of Customer Success and partner closely with Success Leadership & Sales Ops to fully understand & optimize our efficiency to provide real-time insights that allow us to quickly adjust our customer success strategy to better support our customers and improve retention. How you will make a difference: Analyze customer behavior, churn, upgrades and downgrades and customer support issues to drive strategies around retention...
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 still in its early days and youll have a big impact on our direction and how we operate. Youll be central to researching, developing and shipping products that help our customers learn and grow from their data. For this role, were looking for people who have...
Data Science / Machine Learning
Boston
As a Segment Marketing Manager, youll be responsible for leading our understanding of and go-to-market approach for lower SMB online brands. This role is equal parts marketing strategist and practitioner -- and 100% customer-centric. The successful candidate will be just as comfortable with win-loss analysis and making recommendations for distribution channels as they are chatting up existing and prospective Klaviyo customers and making copy suggestions for our website. How you will make a difference: Market research. Calculate the total addressable market for lower SMB online brands. Use a...
Marketing
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 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. Lead Engineers are expected to bring to Klaviyo...
IT/Systems/Networking
Boston
Klaviyo is looking for an L&D Specialist to work closely with our Customer Support leaders to analyze, design, develop, and implement learning programs for our team of Product Experts. This role will report to the Manager of L&D in our Boston office. The L&D Specialist will conduct learning assessments to identify knowledge/skill gaps and engage subject matter experts in the design and focus of new training programs. Learning methods may include instructor-led classes, simulations, mentoring, or on the job training. This role will facilitate both classroom-based and web-based...
Customer Success
Boston
Klaviyo is looking for an L&D Specialist to work closely with our Customer Success and Onboarding leaders to analyze, design, develop, and implement learning programs for our team of CSMs and Onboarding Specialists. This role will report to the Manager of L&D in our Boston office. The L&D Specialist will conduct learning assessments to identify knowledge/skill gaps and engage subject matter experts in the design and focus of new training programs. Learning methods may include instructor-led classes, simulations, mentoring, or on the job training. This role will facilitate both...
Customer Success
Boston
The Growth Success Manager will join 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, and...
Customer Success
Boston
The product team at Klaviyo is passionate about identifying, specing, and shipping solutions to solve tough 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, and work hard to ensure each...
Product Management
Boston
Our small but mighty Creative Team is looking for an experienced Front-End Web Developer with a passion for finding unique and creative solutions. Working in collaboration with designers and other development resources, youll take an active role in the creative process by participating in brainstorms, wireframing, & UI discussions. Youll suggest new ways to make our site more engaging through code and figure out how to bring those experiences to life across the Klaviyo website and blog - in ways that also ensure our site is reliable, consistent, and scalable. Youre an expert in web...
Marketing
Boston
The Field Event Marketing Manager will play a critical role in the development and execution of industry tradeshows and conferences, targeted field events, speaking engagements, and roadshows for the Klaviyo Marketing Team. Youll interact directly with vendors, as well as members of the Klaviyo marketing team who are participating in events. Youll also be traveling to events, ensuring that they run smoothly, and making sure we ship everything we need back. Youll also track documentation of all expenses and interface with our finance team. This is an ideal role for someone with high...
Marketing
Boston
The Email Marketing Manager is responsible for managing outbound email marketing experiences for Klaviyo, inclusive of automations and campaigns. This role will work to centralize email marketing efforts across all Klaviyo teams z creating, maintaining and operating an email deployment calendar. The Email Marketing manager will play a key role in driving communications with two vital audiences; Klaviyos 20,000+ customers and potential new customers who are still evaluating the correct growth marketing platform for their business. Maintaining one brand voice for communications ranging the...
Marketing
Boston
Klaviyo is looking for an experienced eLearning and Instructional Design Specialist to join our growing L&D team and help build out our internal training content. This role will report into the Manager of L&D in our Boston office and is tasked with creating impactful and scalable learning programs for our Customer Success and Support teams. Topics for training will include things like internal systems, Klaviyo products, soft skills, and more. How you will make a difference: This role will work cross-functionally with leaders and subject matter experts to analyze, design, develop,...
Customer Success
Boston
Klaviyo is looking for Security Operations Manager who is looking to take ownership in building a world-class security operations team that monitors, identifies and responds to threats that could impact both Klaviyo and our customers. Were looking for individuals that want to continually improve the information security program. How you will make a difference: Build and lead a team of high-performing security analysts and incident responders focused on threat detection, security operations, and incident response. Design/implement solutions using open-source/third-party tools and automation...
Software Engineering/QA
Boston
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 Getting Started Might Look Like: First 30 days You spend your time getting to...
UX & Design
Boston
Klaviyo is looking for data scientists to join our team which is still in its early days. Youll have a big impact on our direction and how we operate. Youll be central to upfront research and shipping products that help our customers learn and grow from their data. 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 learning algorithms. The right candidate will have both a solid fundamental understanding and deep practical...
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 still in its early days and youll have a big impact the Data Science Team's direction and how we operate.. Were looking for people who could play any number of different engineering roles in a cloud-scale SaaS company and are specifically excited by working in...
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
Were looking for a customer-facing engineer who loves talking to customers, understanding their needs and solving difficult problems. This position is for someone who loves to dive into code to create new solutions or resolve customer problems. How you will make a difference: Be proficient in multiple programming languages. Writing code is a key aspect of this role. Develop and maintain code for extensions and plugins to major e-commerce platforms. Take ownership of advanced technical issues our customers encounter, and drive resolutions to those issues. Be outstanding at documenting what...
Customer Success
Boston
The Content Specialist is responsible for executing day-to-day content operations and will create high-quality, relevant, and engaging content to help Klaviyo and its customers grow their businesses. Youll create mostly short-form content in a variety of formats (social media posts, videos, infographics, etc.) and some long-form content to support marketing leaders across the business (SEO, product marketing, community events, etc.), which will be published across multiple distribution channels (social media, blog, website, email, etc.) Youll collaborate closely with fellow members of the...
Marketing
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
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. How you will make a difference: Generate meetings for the sales team through the rapid response to and qualification of inbound...
Sales & Business Development
Boston
As the Accounts Payable Specialist at Klaviyo, you will actively contribute to the growth and development of the Accounts Payable and Finance functions, including creation of and adherence to company policies and internal controls, liaising with teams across the organization and external vendor contacts, and attention to detail allowing accurate, timely financial reporting. This position will report to the Accounting Manager and will work closely with the entire accounting team and with other department stakeholders. How you will make a difference: Lead Accounts Payable efforts, including...
HR, Finance, & Operations
Boston
AEs at Klaviyo are given a tremendous opportunity to have a huge positive impact on Klaviyos prospects, on Klaviyos 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 70% of their opportunities, forecast their business with...
Sales & Business Development
225 Franklin Street, 10th Floor
Boston, MA 02111

Blog

October 4, 2019
A few weeks ago I was looking for a tank of camping propane. I dug through all sorts of fun stuff in my garage and came across this……my linear algebra textbook from college. Matrices seem more exciting now than they did freshman year. I worked through the first few problems and put the book next to my bed, but the only thing that happened is I felt guilty about not picking it up again.The guilt got to me this past weekend. I realized I just wasn’t going to get far working through dense p...
October 1, 2019
Everyone moves on. It’s how you and I both got to where we work right this minute. Even though it’s exciting to jump into a new gig, we leave behind friends, routines, lunch spots, things that are important to us, things that will be missed. Everyone moves on, but we’ll come back to that. Right now though, I want to talk to you about the Finger Game and the role it has played in building and maintaining an engineering team.Drinking culture at startups can be controversial, but done respons...
September 25, 2019
Last month, we wrote an article arguing that an A/B test was the best way to find the optimal send time for a group of customers. We said it would be impractical to A/B test at the individual level, and in this post we’ll explain why. We’ll start with some basic intuition and then take you through the full mathematical explanation of why it doesn’t work.Let’s imagine a brand is trying to find the best time to send you messages. They want to A/B test send times to pick a winner among the...
September 23, 2019
At Klaviyo we send billions of emails per month, so we often run into problems of scale in the strangest of places. In order to send out…Continue reading on Klaviyo Engineering »...
September 18, 2019
Klaviyo is about making your business grow. We like to measure everything by revenue. But for Smart Send Time, we measure open rate. Why?Conversions are rare events. A conversion rate of 0.1% for a campaign is fairly typical. Comparing the rates of rare events is extremely difficult since there is huge variation, so unless sample sizes are gigantic, it is impossible to distinguish between conversion rates.Let’s look at an example from an experiment we performed during the beta for Smart Send ...