During May 2025, Filip Rus developed a comprehensive Group Management API for the Stefan2114/UBB-SE-2025-927-2 repository, focusing on backend functionality using C# and database management techniques. He implemented full CRUD operations through a dedicated GroupController and introduced a GroupDTO to structure group data. Filip extended the DbContext with a Groups DbSet to support persistent storage and defined an asynchronous GroupControllerService interface to streamline group-related operations. By resolving a DbContext merge conflict that previously hindered server startup, he stabilized deployments and established a foundation for future enhancements in group-based administration, permissions, and reporting within the application’s backend architecture.