Klaviyo is looking to solve the problem of building the foundation for how customers create, manage, schedule, and understand the performance of their marketing campaigns across channels.
Requirements
- 7+ years of software engineering experience, including significant fullstack work
- Strong backend experience, with a track record of building and scaling services in production
- Hands-on experience with: Frontend: React, TypeScript, and modern state management patterns (e.g., Redux or equivalent)
- Hands-on experience with: Backend: Python with Django, FastAPI (or equivalent web frameworks)
- Hands-on experience with: APIs: RESTful and GraphQL APIs
- Hands-on experience with: Data & performance: relational databases (e.g., MySQL/Postgres), query optimization, caching, and performance tuning
- Experience acting as a tech lead or lead engineer for a team or domain
Responsibilities
- Provide technical oversight and direction across a portfolio of projects
- Shape and execute on the forward-looking architecture for multiple Campaigns domains
- Partner closely with the Engineering Manager, Product, and Design on strategy, planning, and execution
- Work through influence and delegation to help the team deliver reliably and at a high bar of quality
- Lead the design and implementation of best-in-class web experiences using React and TypeScript, backed by REST and GraphQL APIs
- Ensure backend systems are robust, observable, and performant, with an eye on peak traffic events
- Scrutinize and reduce technical ambiguity and risk for upcoming projects through design reviews, technical spikes, and clear decision records
Other
- Collaborative and influential: You work through influence and delegation rather than just personal heroics
- Growth-oriented: Proven track record delivering complex features in fast-paced, product-led environments
- You’ve experimented with AI tools in work or personal projects, and you’re eager to learn how they can improve developer and customer experiences
- Massachusetts Applicants: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment
- Klaviyo is committed to a policy of equal opportunity and non-discrimination
