During November 2025, Tarang developed an Enrollment Data CSV Export feature for the ucsb-cs156/proj-courses repository, focusing on backend reliability and data accessibility. The work involved designing a dedicated CSV model and refactoring the download workflow to support structured data representation and robust error handling. Using Java, Spring, and JUnit, Tarang enhanced the service layer to automate CSV generation, expanded unit and mutation testing to cover edge cases such as null values and exceptions, and introduced mocking for comprehensive test coverage. This feature reduced manual export effort, improved reporting accuracy, and lowered support overhead by streamlining data export for API consumers.