Worked on the stripe/LibreChat repository to deliver secure authentication improvements by integrating support for reverse proxy forwarded authentication. Developed middleware using JavaScript and TypeScript to consume and validate authentication headers passed from a reverse proxy, ensuring that validated identities are properly propagated through the backend. Updated configuration options to allow deployments to opt into this feature, making it easier for users to leverage existing proxy infrastructure. Focused on backend development and authentication, the work enhanced security and streamlined deployment processes without introducing new bugs. The implementation addressed real-world deployment needs by simplifying integration with common reverse proxy environments.