Lead Software Engineer, Klaviyo
Experimentation & Optimization
$188-282k
3+ days a week in office
The only CRM built for B2C
Be an early applicant
The only CRM built for B2C
1001+ employees
Be an early applicant
$188-282k
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
- 10+ years of experience as a hands-on software engineer
- Experience architecting and building intuitive, consistent APIs in either REST or GraphQL
- Passionate about creating systems that elegantly simplify complex patterns and practices
- Proven ability to lead the technical vision for a platform or product area, shaping architecture and strategy to drive impact
- Successfully led and delivered complex, multi-quarter projects involving multiple teams
- Motivated to grow the team, both by mentoring team members and attracting new talent to expand our capabilities
- Excited to dive into the code, deeply understand the experimentation and optimization space, and provide applicable technical mentorship
- Strong understanding of cloud architectures and scalable systems, knowing the right tools to use based on the problem at hand
What the job involves
- As a Lead Software Engineer on the Experiments Platform Team, you will play a key role in shaping the architecture and strategy for experimentation at Klaviyo. You’ll lead technical discussions on how to design and implement robust experimentation features that help users optimize their marketing efforts
- Ou’ll own the team’s mission, goals, and roadmap, collaborating closely with technical product owners and managers to develop a cohesive strategy that aligns both technical and business objectives. Your work will directly impact Klaviyo’s customers by enabling them to make data-driven decisions that enhance engagement and business outcomes
- Our tech stack includes: Python, FastAPI, gRPC, TypeScript, React, AWS, Django, and Spark, MySQL, PostgreSQL, Clickhouse, Redis, DynamoDB, AWS, Terraform, Docker, Argo
- Lead the technical vision for experimentation and optimization at Klaviyo, shaping how we design, build, and scale our experimentation platform
- Deliver key product capabilities in experimentation and optimization, enabling users to test and refine campaigns, flows, and forms to maximize engagement
- Build scalable systems and experimentation infrastructure that process large volumes of data to deliver insights for businesses of all sizes
- Research, test, and productionalize experimentation methodologies and algorithms that provide measurable improvements in user engagement
- Become a subject matter expert (SME) in experimentation and optimization, helping to drive best practices across the organization
- Work cross-functionally with product, design, and data science teams to create a seamless experimentation experience for Klaviyo users
- Have ample opportunities for growth and impact, given the scope of this role and the team’s central role in Klaviyo’s product strategy
- He Experimentation & Optimization team is a full-stack engineering team that builds intuitive and robust experimentation solutions for Klaviyo users. Our team is responsible for developing and enhancing Klaviyo’s experimentation platform, enabling users to experiment with and optimize campaigns, flows, and forms to improve audience engagement
- We prioritize rigorous statistical methods and ensure model explainability, working closely with data scientists and UX designers to create a seamless user experience. By providing a powerful platform, expert guidance, in-depth analysis, and actionable insights, we help businesses extract meaningful learnings from their data
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
- Put customers first.
- Win together.
- We’re 1% done.
- Know the score.
- Be meticulous in your craft.
- Move fast, no shortcuts.
- Drivers wanted.
- Stay hungry, stay humble.
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
We don't have enough data yet to provide salary benchmarks for this role.
Submit your salary to help other candidates with crowdsourced salary estimates.
Share this job
View 154 more jobs at Klaviyo