Senior Software Engineer, Klaviyo
Web Platform
$156.8-235.2k
3+ days a week in office
The only CRM built for B2C.
Open for applications
The only CRM built for B2C.
1001+ employees
Open for applications
$156.8-235.2k
3+ days a week in office
1001+ employees
Company mission
Klaviyo is the only CRM built for B2C brands. Powered by its built-in data platform and AI insights, Klaviyo combines marketing automation, analytics, and customer service into one unified solution, making it easy for businesses to know their customers and grow faster.
Role
Who you are
- Experienced at building and maintaining platform tooling at a SaaS company. Ideally in the frontend platform space
- Several years of professional experience with React and TypeScript
- You have experience working on a JS build pipeline using tools like Webpack and Babel (or any of the various alternatives)
- Thrives in a fast paced, customer focused, and strategic environment
- You have mentored other engineers before
- You have been involved in large cross team technical projects before
- Constantly thinking about frontend performance. If shaving kilobytes off a JS bundle or fixing wasted renders sounds appealing, we want to hear from you
What the job involves
- The Web Platform team owns all the ways we build, ship, monitor, and test frontend code at Klaviyo
- As a Senior Software Engineer on the team, you will be deeply involved in how we build, maintain, and improve our deployment processes, core frontend services, and overall frontend performance
- You can look forward to being a part of a highly technical team with significant domain expertise. We oversee a well organized monorepo that is leveraged across the organization that deploys 50+ times a day
- The team also owns and orchestrates a GraphQL backend for frontend service to offer strong end-to-end typing across our stack
- As we look toward the next 6-12 months, we aim to focus on improved developer velocity through improved static analysis and CI structure as well as better platform web vitals by overhauling our application initialization process
- You will collaborate closely with other Web Platform team members to help build a best in class platform for our end customers and engineers
- You will be responsible for implementing new functionality into complex frontend systems
- You will help ensure our frontend is stable and secure by keeping core dependencies (eg. React) up to date
- You will help educate other Klaviyo engineers on frontend best practices by attending RFCs, reviewing PRs, and holding office hours
- You will be an active participant in all team processes including standups, groomings, retros, on call, and more
- You will help interview new engineering team members as we continue to grow our organization
Our take
Klaviyo is a marketing firm helping growth-focused eCommerce brands drive more sales with super-targeted, highly relevant email, Facebook and Instagram marketing campaigns. From personalised newsletters to automated emails when customers abandon their shopping carts, the marketing automation platform makes it easy for businesses to capture, store, analyze, and predictively use their own data to drive measurable, high-value outcomes.
Klaviyo's CEO, Bialecki, believes that the main problem with e-mail marketing today is that there is a divide between two kinds of tools: analytics tools that help you understand what people are doing on a website, such as what products they are considering, and messaging tools that send them a marketing e-mail. Operating primarily within the retail and eCommerce industry, Klaviyo aims to solve this by offering a tool that brings together analytics and messaging. This allows companies to bring all of their first-party data into a single platform to get a deep understanding of their customers and then activate that data to deliver highly-targeted, personalised communications through email and SMS. In the process, Klaviyo's customers get a deep understanding of their consumers.
Klaviyo is a fast-growing company mainly due to its business model - the firm offers a concrete ROI for Klaviyo’s clients if the software persuades customers to make purchases by treating different types of customers differently. An IPO in 2023 has led to Klaviyo's release of Klaviyo AI, which empowers businesses to unlock revenue-driving opportunities and deliver exceptional customer experiences across channels. Still in its early days of public listing, it will be interesting to see how Klaviyo fares in the years to come.
Freddie
Company Specialist at Welcome to the Jungle
Insights
Company
Employee endorsements
Opportunities to learn
"Not only we have a good stipend to spend on learning but we also have development days every quarter, where we can switch off and focus on the areas..."
Funding (last 2 of 6 rounds)
Aug 2022
$100m
LATE VC
May 2021
$320m
SERIES D
Total funding: $778.5m
Company benefits
- Private health care cover
- All full time employees receive equity
- Commuting allowance for when you do travel to the office,
- A very generous education allowance every year for you to spend on learning and development.
- Participation in Klaviyo ESPP
- Personal lifestyle allowance
- Flexible holiday scheme
Company values
- We always put our customers first.
- We are owners.
- We strive to make the world more equitable.
- We are ambitious.
- We are always learning.
- We collaborate radically.
- We are remarkable.
Company HQ
Financial District, Boston, MA
Articles
Leadership
Andrew Bialecki
(CEO)Previously CTO at RockTech, Senior Engineer at Performable, Lead Engineer at Applied Predictive Technologies and an SDET Intern at Microsoft
Ed Hallen
(Chief Product Officer)Currently an Advisor at Team Engine. Previously worked in Enterprise Business Development at Google, Summer Associate at Accel-KKR and Principal at Applied Predictive Technologies.
Salary benchmarks
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Diversity, Equity & Inclusion at Klaviyo
Katelyn Nnake (Director of Diversity, Equity & Inclusion)
- At Klaviyo one of our key values is "we strive to make the world more equitable"
- In 2024 over 75% of Klaviyos participated in a Klaviyo Resource Group
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