Worked on authentication and configuration management features across Arize-ai/phoenix and langfuse/langfuse repositories, focusing on developer experience and deployment flexibility. Delivered OpenID Connect local development support in Arize-ai/phoenix by relaxing OIDC configuration validation, allowing non-HTTPS URLs for local Identity Provider testing while maintaining production security. In langfuse/langfuse, implemented dynamic BASE_PATH cookie scoping, enabling authentication cookies to adapt to custom deployment paths using the NEXT_PUBLIC_BASE_PATH environment variable. These solutions, developed using Python and TypeScript, improved local testing workflows and authentication robustness in multi-environment setups, reflecting a pragmatic approach to backend and frontend development challenges over a two-month period.