Philip Sulz refactored the WettkampfComponent in the bettercodepaul/swt2-bsa-backend repository, replacing direct data access via MannschaftsmitgliedDAO with a new MannschaftsmitgliedComponent. This architectural change, implemented using Java and the Spring Framework, improved the modularity of the backend by reducing coupling and enhancing separation of concerns. By decoupling the WettkampfComponent from the DAO layer, Philip established a foundation for easier testing and future feature development. The work focused on backend development and demonstrated a thoughtful approach to maintainability and extensibility, addressing architectural depth rather than breadth within the project during the one-month period of contribution.