I build things end to end.
Apps, web, servers — alone.
Seven years of backend work in finance and security. Alongside it I ship iOS apps alone — from the first idea to App Store review — and take the web side from the screen to the deploy.
Selected Work
- PaceformReleased목표 시간만 넣으면 구간별 페이스가 나옵니다ios · watchos · 2026–
- ChronyanIn development다묘 가정의 케어와 증상을 하나의 타임라인에 — 사료를 바꾼 날이 토한 날 옆에 찍힙니다ios · 2026–
- daily-refillIn development시스템 수첩 리필을 직접 만들어 A4에 인쇄합니다 — 뽑았을 때 구멍 자리가 mm 단위로 맞습니다web · backend · 2026–
- CrossPoint Reader CJKOpen source전자잉크 리더 펌웨어에 세로쓰기와 CJK 읽기를 붙였습니다embedded · 2025–2026
Selected Experience
- 2025.09 —
- Security assessment SaaS
A subscription security-assessment service for small businesses. I designed the backend API and system architecture, and built the assessment server and agents.
- 2025.05 —
- Blockchain software-licence tracking
A platform that verifies licence-record integrity on a consortium blockchain. I owned the backend API, the chain integration, and the tracking modules.
- 2024.03 —
- B2B remote certificate issuance
Designed and automated per-business certificate issuance, from data modelling through legacy integration.
Contact
Currently taking on new projectsas of 2026-08
Available for freelance and collaboration. I usually reply within two business days.