Worked on enhancing the stability and reliability of the Kubernetes endpoint controller by addressing a critical bug in the kubernetes/kubernetes repository. Focused on resolving a panic that occurred when the IPFamilies field was empty, the solution restored logic to infer the IP family from ClusterIP or pod IP, ensuring robust service endpoint handling. Applied Go and backend development skills to implement bounds-safe access to IPFamilies and reconcile differences between watch and GET/LIST data paths. This work reduced the risk of service disruption for both headless and headful services, aligning with business goals of stable service discovery and lower maintenance overhead.