Worked on the 9001/copyparty repository to enhance directory listing reliability and performance, focusing on backend development and file system management using Python. Delivered improvements such as accurate leaf-level item counting and introduced a scandir optimization flag within the Lim class to boost listing speed. Addressed cosmetic user experience by implementing .hidden-based dotfile exclusion, making directory views cleaner. Fixed a bug related to date format handling, resolving issues with trailing slashes in date parsing and correcting rotn leaf-level counting for more dependable listings. Collaborated cross-team to refine dotfile handling, demonstrating robust edge-case management and attention to both performance and usability.