Worked on the spinnaker/spinnaker repository to enhance API security by implementing OAuth2 Bearer Token enforcement for all API requests. This update shifted authentication away from session cookies, ensuring that every request includes a Bearer token and improving reliability across spin-cli and API interactions. The technical approach involved updating the gateclient to consistently set the Bearer token for OAuth2 flows and adding automated tests to verify token presence in the request context. Utilizing Go for backend and API development, the work focused on strengthening authentication mechanisms, increasing deployment predictability, and reducing authentication-related support issues without addressing major bug fixes.