Worked on the kubernetes/kube-state-metrics repository to enhance reliability and maintainability of backend systems using Go and Kubernetes. Developed robust custom resource state configuration loading, enabling conditional loading and decoding of configuration files with comprehensive test coverage. Improved file I/O operations by refactoring to use os.ReadFile, which addressed potential file descriptor leaks and mitigated TOCTOU race conditions, while also strengthening error handling for missing files. Refactored metric value naming in the md5HashAsMetricValue function to improve code clarity and future maintainability. These contributions reduced operational risk and laid a foundation for smoother ongoing maintenance and testing of backend components.