Worked on the containerd/containerd repository to refactor the OOM Watcher subsystem, focusing on improving modularity and maintainability. The approach involved decoupling the OOM Watcher from the shim package and migrating its event publishing mechanism to use events.Publisher in both v1 and v2. This change reduced cross-package dependencies and enhanced testability, making the subsystem easier to maintain and extend. The work was implemented in Go, leveraging skills in dependency management, refactoring, and system programming. The update addressed architectural concerns by isolating responsibilities and aligning the codebase with modern best practices for modular system design within container orchestration.