During January 2026, Hao Qin developed a secure JWKS proxy routing feature for authentication in the growthbook/growthbook repository. He introduced explicit proxy configuration to route JWKS URI requests through a designated agent, enhancing both the security and reliability of token validation flows. This work leveraged TypeScript and back end development skills, with a focus on integrating JWKS, OAuth2, and OpenID Connect standards. By minimizing the change surface and maintaining clear commit traceability, Hao ensured compatibility with existing authentication processes while reducing exposure risk. The implementation demonstrated disciplined change management and adherence to network security best practices throughout the development cycle.