Worked on the kubernetes/kubernetes repository to standardize token signing duration across both local and external signers in the Kubernetes API server. The approach involved replacing the IsExternalSigner boolean with an ExtendedSigningDuration parameter, ensuring that token lifetimes are consistent regardless of the signer type. This change improved the predictability and security of token management workflows, making them more auditable and easier to maintain. The work was implemented using Go and focused on backend and API development, laying the foundation for more robust token handling. The update was delivered as a feature, with traceability ensured through linked commit documentation.