Worked on the ente-io/ente repository to enhance backend reliability by addressing a critical data persistence issue. Focused on Go-based API and backend development, the work involved fixing a bug where failures in persisting file and video data could be misreported as successful, risking silent data loss. Improved error handling logic ensured that actual database and S3 upload failures now propagate accurate errors to clients, enabling proper retries and reducing data inconsistency. This update strengthened cross-service error propagation between the persistence and API layers, improving operational reliability and maintainability while demonstrating strong skills in debugging and resilience engineering.