During December 2025, Hyunbae Kim developed and delivered the Organization Role Group API for the TOAST-DOCS/TOAST-Cloud repository, focusing on backend and API development. He implemented full CRUD endpoints within the Public API Gateway, enabling centralized management of organization-level role groups through public interfaces. The work included authoring comprehensive documentation in Markdown, ensuring clear guidance for downstream integration and onboarding. By exposing these management capabilities via a public API, Hyunbae improved governance and streamlined developer workflows. The project demonstrated depth in backend architecture and API design, with an emphasis on maintainability and clarity through detailed documentation and robust endpoint implementation.