Over three months, JLC Timbol developed user engagement features and notification systems across SCE-Development/git-workshop, SCE-Development/Clark, and SJSU-CS-systems-group/DDD. He built recipe content pages with interactive feedback sections using HTML and front end development, then delivered dynamic homepage imagery and visit counters in Clark with Node.js and React, focusing on maintainable code and clear API design. In DDD, he implemented client notification centers and performed targeted server-side cleanups in Java and Kotlin, improving both user experience and code maintainability. His work demonstrated depth in full stack development, balancing new feature delivery with thoughtful refactoring and technical debt reduction.