Worked on the cnoe-io/ai-platform-engineering repository to implement multi-mode authentication for the Backstage rag-ingestor, addressing evolving security and interoperability requirements. Developed a flexible authentication flow supporting both static and OAuth2 strategies, with enhancements such as token caching and pre-expiry refresh logic to improve reliability. Introduced new environment variables and startup validation to ensure robust configuration, while maintaining backward compatibility and upstream logic parity for core backend processes. Utilized Python for backend development, focusing on API integration and authentication mechanisms. The work resolved 401 errors with OpenChoreo Backstage and aligned the system with updated backend authentication standards.