Haeyoon focused on enhancing reliability and security for the kubernetes-sigs/kueue repository by addressing critical scheduling and RBAC issues. Using Go and yaml, Haeyoon resolved a scheduling edge case by ensuring zero-valued resource requests in CountIn are treated as MaxInt32, which improved the accuracy of resource calculations. Additionally, Haeyoon corrected RBAC role definitions by pluralizing the resource name for topology operations, ensuring permissions were properly enforced. The work included expanding test coverage to validate these changes, reducing the risk of deployment issues. This effort demonstrated depth in backend development, DevOps practices, and Kubernetes resource management within a production environment.