Software Engineer @ UJET · ex-Founder/CTO · Seoul, open to global roles
I move fast with AI — and keep the decisions that matter human.
A lunch-recommendation service for office workers. It auto-collects nearby restaurants (discoverable via the OpenClaw skill-optimized API) and suggests a fresh lunch every day based on your visit history and ratings.
A daily journaling app that builds the habit of praising yourself every day — a small ritual for a positive mindset.
A Phaser3 arcade shooter. Fend off the aliens invading Earth, classic arcade style.
A pixel-art idle productivity tool that blends a Pomodoro timer with an aquarium sim. Complete focus sessions to earn fish eggs, collect 12+ species, and grow your own tank.
I take large codebases apart and write down how they actually work.
Archify has the agent write a typed JSON IR and lets a deterministic compiler turn it into a self-contained HTML artifact. I read the repository end to end and built four diagrams with it, watching what the validator refuses, why deliver, visual-check, and human review are kept apart, and what changes when this blog’s own mermaid is ported over.
I booted DeepSeek Harness with a single npx command and no API key, dumped its 145-row boot tree with --dump-config, and edited the patch layer by hand. The web profile ships with every model-facing tool switched off, and the reason turns out to be interesting. I also walked straight into the trap where patching a row config silently kills a CLI flag.
UJET is AI-Powered Cloud Contact Center Platform for Premium CX · Rails · GCP · Node.js · TypeScript · Kubernetes
Climate-tech startup (product: Stepping). Sole engineer on a three-person founding team; built carbon-measurement and offset products end-to-end: app, infra, and CI/CD. · Next.js · React · Nest.js · PostgreSQL · AWS · 0to1
South Korea's leading home services platform. Responsible for client app maintenance and back-office development to improve CX operations. · React · React Native · Redux · TypeScript