Over a two-month period, contributed to the vodaioan03/UBB-SE-2025-927-1 repository by developing and refining backend features focused on exercise modeling and section management. Leveraging C#, ASP.NET Core, and RESTful API principles, implemented robust data models, introduced validation and error handling, and standardized API routes to improve maintainability and integration consistency. Enhanced service reliability through dependency injection and interface-driven design, while migrating tests to MSTest for improved coverage and reliability. The work emphasized roadmap-centric data access, clearer endpoint conventions, and modular architecture, resulting in increased data integrity, faster onboarding for new integrations, and reduced downstream maintenance across the codebase.