During May 2025, contributed to the Stefan2114/UBB-SE-2025-927-2 repository by designing and implementing a Group Management API using C#. This work introduced a GroupDTO and a GroupController with full CRUD endpoints, enabling granular group-based data management within the application. Leveraging skills in API development, backend development, and database management, the implementation included adding a Groups DbSet to the DbContext for persistent storage and defining an asynchronous GroupControllerService interface. Additionally, resolved a DbContext merge conflict that had caused server startup issues, stabilizing deployments and laying the groundwork for future enhancements in group permissions and administrative features.