Developed and delivered a GitHub Enterprise Cloud integration for the runatlantis/atlantis repository, focusing on secure automation for enterprise workflows. The work introduced App-Level JWT authentication and support for custom API URL patterns, enabling seamless onboarding and scalable CI/CD automation for GitHub Enterprise Cloud users. Implemented robust client initialization and cloud instance handling in Go, with an emphasis on backend development and API integration. Addressed a key issue with API URL resolution to ensure correct endpoint discovery for enterprise deployments. The solution enhanced security and reliability, reducing integration friction for large teams and improving the overall developer experience through targeted testing.