Worked on the projectcalico/calico repository to enhance TLS configurability and reliability by introducing a configurable minimum TLS version feature. Developed end-to-end support for the TLS_MIN_VERSION environment variable, including parsing logic, integration into the backend TLS configuration, and propagation across API server components. Addressed a critical startup failure when using TLS 1.3-only ciphers, reducing deployment downtime and improving system reliability. Expanded test coverage and updated documentation to guide users and validate the new configuration. Utilized Go for backend and API development, applying security best practices throughout the implementation. Refactored code and streamlined documentation to improve maintainability and future extensibility.