Xiaoyang Wong developed new backend features for the proj-courses-s25-03 repository, including a General Education Areas API endpoint and a comprehensive refactor of the curriculum module to improve code readability. Using Java, Spring Boot, and REST APIs, Xiaoyang overhauled the CSV export process by introducing a dedicated service for CSV line generation, decoupling it from the controller, and enhancing test coverage with JUnit and Mockito. These changes reduced code coupling and maintenance overhead while improving data export reliability. The work enabled safer, faster feature delivery and established a more robust foundation for future enhancements across the courses-related modules.