Worked on the satlantis-dev/api-client repository to centralize API client event routing, decoupling event emission from direct relay connections by removing SingleRelayConnection usage in unfollowPubkey and _postNote for both MEDIA and BASIC operations. This refactoring improved maintainability and testability by reducing relay coupling and restructuring event handling. Additionally, corrected the TypeScript type definition for Interest.autofollowsByNpub to accept string arrays, null, or undefined, preventing type-related errors and aligning with intended usage. Demonstrated strong skills in API development, backend development, and TypeScript, laying a robust foundation for future enhancements through disciplined refactoring and careful attention to type safety.