What I build and what I document.
This is Dongmin Yu’s personal portfolio, collecting records of mobile products and developer tools he has designed and implemented. It prioritizes verifiable results and the evidence behind them over fast-changing tool names or a one-line introduction.
How to read this site
Open Source covers public repositories and published tools, Projects covers products built outside work, and Work Portfolio covers case studies by company. The résumé is a formal document that neither adds nor infers facts, while Writing records constraints and decisions confirmed during implementation. Each section serves a different purpose, so it does not repeat the same content. Claims with links can be checked again on the linked public pages.
Automated tools and AI agents should first read llms.txt and sitemap.xml, then move to the section for the evidence type they need. Current contact methods and the scope of data processing are published on Contact and Privacy.