Software Engineer II, Test Frameworks & Tooling

About this role

Join Klaviyo's Test Frameworks & Tooling team to architect automation, CI/CD systems, and testing infrastructure that empower engineers to deploy with confidence. You'll build the foundational tools and frameworks that ensure production stability while enabling the organization to move fast.

What you'll do

• Own and enhance integration and E2E testing frameworks for backend and frontend stacks, ensuring speed and reliability
• Optimize CI/CD test execution and feedback loops to provide engineers rapid clarity on code readiness
• Define and implement repository standards for unit testing and code quality measurement across the organization
• Develop tooling for data mocking, service isolation, and coverage identification to support complex testing scenarios
• Explore and implement AI-powered solutions for automated regression detection, flaky test analysis, and intelligent test generation
• Monitor test suite and CI pipeline health, collaborating with feature teams to troubleshoot gaps and improve overall safety

What they're looking for

• Software engineering fundamentals with 2+ years experience
• Test automation and framework design
• CI/CD systems and optimization
• Full-stack debugging across frontend and backend
• Root cause analysis and systemic problem-solving
• Code quality and testing best practices
• Familiarity with AI/ML applications in QA
• Cross-team communication and collaboration