Developed Google Login support for the Vercel CLI by integrating Google OAuth into the existing authentication flow within the vercel/vercel repository. This work enabled users to sign in with Google, broadening identity-provider options and streamlining the onboarding process for developers. The implementation focused on secure OAuth 2.0 integration and seamless CLI feature development, ensuring compatibility with the current login prompt and workflows. Utilizing JavaScript and TypeScript, the contribution enhanced both security and user experience without introducing new bugs. The work demonstrated a strong grasp of authentication protocols, full stack development, and collaborative code review practices within a production environment.