During April 2025, this developer contributed to both backend and frontend enhancements across the agarasia/SER516_Spring25_Teams_3_and_4_Backend and Frontend repositories. On the backend, they implemented and refactored the EfferentCouplingService test suite using Java, Mockito, and JUnit, focusing on validating repository processing, data computation, and persistence while improving test readability and maintainability. On the frontend, they developed a loading spinner component in Vue.js and TypeScript to provide visual feedback during GitHub URL validation, enhancing user experience by indicating progress during API calls. Their work strengthened testing foundations and improved UI responsiveness without introducing new bugs.