Worked on the linkerd/linkerd2 repository to address a critical bug affecting multicluster namespace-aware service cleanup. Focused on refining the cleanup logic to ensure that headless mirror services are only deleted within their respective namespaces, the solution involved updating functions to restrict Kubernetes API list calls to the namespace of the exported service. This approach prevented unintended cross-namespace deletions and improved the reliability of multicluster deployments. The work was implemented in Go, leveraging Kubernetes backend development patterns and validated through code review and CI processes. The fix enhanced operational safety by tightening namespace boundaries during service cleanup operations.