Worked on the netlify/primitives repository to deliver robust multi-value response header support in serverless functions, focusing on accurate preservation and reconstruction of both standard and multiValueHeaders in API responses. The implementation aligned with Lambda’s payload shape and ensured consistent header handling across development workflows, including integration with the Vite plugin. Used TypeScript to streamline the codebase by removing an unused header conversion helper, reducing technical debt and simplifying the response logic. Added comprehensive regression tests for both plain and streamed responses, validating header propagation and preventing future regressions. Demonstrated skills in API development, serverless functions, and automated testing practices.