During May 2025, this developer contributed to the ucsb-cs156/proj-frontiers repository by building a backend endpoint that enables users to view a personalized list of their enrolled courses. The implementation leveraged Java, Spring Boot, and JPA to ensure robust authentication and seamless data retrieval. To improve code maintainability and reduce boilerplate, the developer refactored user email retrieval logic, streamlining access to user context throughout the backend. Comprehensive end-to-end and JUnit tests were added to validate the new endpoint and safeguard against regressions. The work focused on enhancing user value, reliability, and maintainability without introducing new bugs during the period.