Worked on the kubernetes/kubernetes repository to enhance container lifecycle management, focusing on improving init container restart logic, refining error messaging, and enabling OS-based default image selection. Used Go and Kubernetes expertise to expand test coverage for container image updates, ensuring more reliable behavior during updates and maintaining test suite stability by removing problematic tests. Improved the structure and maintainability of the container lifecycle test suite by introducing clearer context, better formatting, and comprehensive linting. The work emphasized robust end-to-end testing and container orchestration, resulting in more predictable lifecycle behavior and a cleaner, more maintainable codebase for ongoing development.