Klaviyo
Software Engineer II - Growth
Boston, MAFrom $174kmidAdded 1 month ago
About this role
Klaviyo seeks a Software Engineer II to improve new customer onboarding and product activation through data-driven UX enhancements and A/B testing. You'll work across teams to reduce friction in the platform setup experience and mentor fellow engineers.
What you'll do
- Implement user experience improvements across the product, particularly for new customers
- Design and run A/B tests to validate ideas and measure impact on key metrics
- Partner with marketing, data science, sales, and engineering to identify improvement opportunities
- Gather direct customer feedback to inform product decisions
- Mentor other engineers and improve development and experimentation processes
- Work from Boston HQ at least 3 days per week
What they're looking for
- Full-stack software engineering
- Frontend technologies (React, TypeScript, JavaScript, HTML)
- Backend development (Python, Django)
- A/B testing and experimental design
- Data-driven product thinking
- AWS infrastructure and DevOps tools
- Database systems (MySQL, Cassandra)
- AI-driven software development practices
Opens the official application on the employer’s site. No login required.
Klaviyo
Klaviyo builds a platform for personalized mobile app experiences and customer engagement, offering SDKs, identity and access management services, and onboarding solutions. The company is hiring software engineers across mobile development, identity systems, product activation, and internal platform teams.
- Website
- klaviyo.com
Likely interview questions
- Walk us through a time when you used A/B testing to improve a user-facing feature. What metrics did you track, and how did you interpret the results?
- Describe your experience building full-stack features that impact new user onboarding or customer acquisition. What was the biggest challenge you faced?