Worked on authentication and developer experience improvements across two open-source projects. In colinhacks/openauth, addressed a React example bug by ensuring access tokens were correctly returned when not refreshed, and improved code maintainability by removing unnecessary console logs from the core codebase. This enhanced the reliability of authentication flows and reduced debugging overhead for downstream integrations. Later, contributed to langfuse/langfuse by streamlining onboarding through clear environment variable setup guidance and updating the .gitignore to support pnpm-store, making local development smoother. Leveraged JavaScript, TypeScript, and both backend and frontend development skills to deliver targeted, maintainable solutions that improved user workflows.