Jang Young-jun developed and maintained developer-facing documentation for the sejongsmarcle/2025_Junior_ML_Study repository, focusing on onboarding efficiency and knowledge transfer. Over two months, he authored comprehensive Markdown documents detailing his personal profile and weekly assignment notes, integrating references to related Notion pages to streamline review processes. His work emphasized clarity and traceability, supporting new contributors in understanding project context and expectations. By leveraging his skills in documentation and Markdown, Jang ensured that project knowledge was accessible and well-organized. Although he did not address bug fixes, his contributions provided foundational assets that improved the repository’s maintainability and onboarding experience.