๐ Seoul | ๐ ๏ธ Builder who ships to real users
Started on iOS, now building AI services and backends with coding agents.
| Mobile |   |
| Web |     |
| AI |    |
- Find the real problem. When I run into a problem, I first look for what's really behind it.
- Build what I need. If the tool I need doesn't exist, I make it myself.
- Keep getting better at working with AI agents. I build with them every day and keep asking how to work with them well.
- ๐๏ธ Day Zero โ Hiring assessment where candidates debate with three AI teammates by voice. Dev lead on a 6-person team: server, five LangGraph agents, MCP servers, evaluation pipeline.
- ๐ CorpInsight โ Writes company research reports from filings and web search, with sources.
- ๐ solve-sync โ Chrome extension that commits your accepted LeetCode, Programmers, and SWEA solutions to GitHub. Built and shipped solo to the Chrome Web Store, no backend server. (code)
- ๐ ํ์ ๋ ์ ยท Read a Bite โ Splits a reading goal into daily pages and reminds you to read. 1,965+ downloads. iOS lead at Apple Developer Academy, still maintained after graduation. (code)
- ๐ DoRunDoRun โ Real-time running app for friends (Depromeet 17th). Unified location and motion sensor events into one stream.
- ๐ฌ COMFIE โ Location-based private diary. When a PR touches screens or tests, CI runs the UI tests and posts the recordings as GIFs.
- ๐งฑ Physicollapse โ Stack and topple physics blocks on iPad. WWDC25 Swift Student Challenge Winner.
- ๐งฉ horang-skills โ Nine Agent Skills that turn things that are hard to understand into results a person can review.
- ๐ ๏ธ herdr-setup โ Setup for working with several coding agents side by side in the terminal.
- ๐ blog-review โ 30+ engineering blog posts broken down into problem, constraints, options, and why each team chose what it did.
- ๐งฎ ps-archive โ My algorithm solutions, committed by solve-sync.
- SK AX SKALA โ AI service development program ยท 2026.07 ~ 2026.12
- Depromeet 17th โ iOS engineer, DoRunDoRun ยท 2025.08 ~ 2025.11
- ๐ WWDC25 Swift Student Challenge Winner โ Physicollapse ยท 2025
- Apple Developer Academy @ POSTECH โ dev lead on 3 of 4 team projects ยท 2024.03 ~ 2024.12
- University of Seoul โ B.S. in Architectural Engineering ยท 2026