During November 2025, Yomybaby developed the App Proxy Authentication Redirect feature for the lablup/backend.ai repository. This work focused on enhancing the authentication flow by introducing support for a redirect parameter, allowing users to be directed to a specified path after authentication. Yomybaby implemented logic in Python to ensure the redirect URL accurately included the intended path, improving both navigation accuracy and security. The update addressed the handling of redirect parameters in the app proxy authentication endpoint, resolving related issues and increasing the robustness of backend authentication processes. The work demonstrated depth in API development and backend engineering using Python.