Worked on the JeongEon8/AlgorithmStudyinGumi repository, focusing on improving code organization and file management over a two-month period. Delivered two non-functional features centered on repository structure, including a comprehensive refactor to align with updated naming conventions and a reorganization of study files by month and year. These changes, implemented using C++, Java, and Python, enhanced maintainability and streamlined onboarding for new contributors without altering existing functionality. By standardizing directory structures and improving traceability, the work laid a solid foundation for future development, enabling faster code reviews and more efficient sprint planning while maintaining overall project stability and clarity.