Sunny S. developed and integrated TLS Pre-Shared Key (PSK) authentication for the Netflix/zuul core, focusing on enhancing network security and authentication efficiency. By leveraging Java and Gradle, Sunny introduced Bouncy Castle TLS components and implemented PSK handshakes within the Netty pipeline, enabling an alternative secure authentication pathway for client-server communication. This work established end-to-end security tooling readiness and improved code integration for the repository, laying the groundwork for broader deployment and performance testing. The feature addressed the need for flexible authentication mechanisms in backend systems, demonstrating depth in backend development and expertise in TLS and network security protocols.