Worked on a targeted codebase reorganization for the Jihye511/Ssafy_Algo_Study repository, focusing on improving maintainability and contributor onboarding. The primary engineering effort involved renaming Java files and restructuring directories to create a more logical and accessible package layout. This refactoring, implemented using Java and leveraging strong file organization skills, aimed to reduce future maintenance time and lower the cognitive load for new contributors. No bug fixes were logged during this period, as the work centered on codebase hygiene and change management. The result established a scalable foundation for future feature development within the repository’s evolving structure.