Developed a configurable CNI token refresh interval feature for the projectcalico/calico repository, enhancing operational flexibility in Kubernetes networking environments. The work involved introducing the CNI_TOKEN_REFRESH_INTERVAL environment variable and refactoring the token_watch.go Run function to use a new getSleepTime logic, allowing dynamic adjustment of token refresh cadence. The implementation ensured robust fallback to default behavior when the environment variable was unset or invalid, maintaining cluster stability. This contribution demonstrated skills in Go, DevOps, and system programming, with careful attention to runtime configuration and maintainable code changes in a critical path. No major bugs were addressed during this period.