Developed and integrated PKCE security enhancements for OAuth2 and OIDC authentication flows in the kubernetes-sigs/headlamp repository, focusing on backend implementation and operational readiness. Leveraged Go and concurrent programming techniques to introduce PKCE helpers, unique state variables, and mutex-protected request maps, ensuring thread-safe handling of OAuth requests. Updated Helm charts, deployment templates, and documentation using YAML to enable seamless PKCE adoption across various deployment scenarios. This work improved authentication security and resilience against concurrent requests, while simplifying configuration for operators. The approach emphasized robust backend development and DevOps practices, addressing both security hygiene and ease of deployment for PKCE-enabled environments.