Frontend engineer based in South Korea. I build product-focused web and mobile apps with React, TypeScript, Next.js, and React Native.
- 🚀 Currently shipping at Torder
- 🛠 Building AI-first side projects with Claude Code
- 📍 South Korea
- 📫 Reach me at taehyun_fe@naver.com
Languages — TypeScript · JavaScript · Python · Go
Frontend — React · Next.js · React Native (Expo) · Tailwind CSS
State / Data — Zustand · React Query · AsyncStorage · localStorage
AI / Backend — Anthropic Claude API · Node.js · Supabase · Firebase
Automation — GitHub Actions · Pillow
Dev tools — Claude Code · Cursor · Turborepo · Vite
🌱 Ssak — Minimal Habit Tracker — A shipped habit-tracking app built around two contrarian design choices: a hard 3-habit cap and "forgiving streaks" that treat a missed day as a comma, not a reset. iOS lock-screen widgets in three styles, all running through Expo with a custom Swift target plugin.
React Native Expo Zustand iOS Widgets
🤖 F1 Instagram Automation — Automated pipeline that turns F1 press conferences into Korean Instagram carousels under a strict $10/month Claude API budget. Includes a CostGuard module that hard-caps spend at the SDK boundary, plus deterministic slide-splitting in Python to avoid wasted LLM calls.
Python Claude Haiku Pillow GitHub Actions
🌅 Morning Briefing — A daily AI-generated Korean briefing app with a shared-cache architecture: the 1,000th user costs the same as the first. Same Next.js codebase ships to iOS via Capacitor with offline support and push notifications.
Next.js React 19 Capacitor Claude API