Software Engineer @ UJET · ex-Founder/CTO · Seoul, open to global roles
I move fast with AI — and keep the decisions that matter human.
A native macOS markdown editor for plain-file vaults, built on SwiftUI and TextKit 2 with a Swift extension SDK. Incremental Live Preview keeps a keystroke in a 4,000-line note at about 15 ms, with performance budgets checked in CI. Local-first, MIT licensed.
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.
I take large codebases apart and write down how they actually work.
This post opens the code of twelve passthrough mods that merge two running games into one and sorts them by what crosses the bridge: pixels, meshes, logic, or nothing at all.
This post reads minecraft-crossover-bridge and walks through what its shared-memory protocol, depth-tested compositing, terrain raycasts and hidden stand-in character each solve.
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