Developed and integrated TLS Pre-Shared Key (PSK) authentication for the Netflix/zuul core, focusing on enhancing network security and providing an alternative authentication mechanism for client-server communication. The work involved introducing Bouncy Castle TLS components and embedding PSK handshakes directly into the Netty pipeline, leveraging Java and Gradle for implementation and build management. This feature established a secure, efficient pathway for authentication, laying the groundwork for future performance testing and broader deployment. The approach emphasized code quality and end-to-end security tooling readiness, ensuring seamless integration within the existing backend architecture while addressing evolving requirements for secure communications.