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.
Floci is an always-free, open-source local AWS emulator with no account, no auth token, and no feature gates. A single Quarkus + GraalVM native container emulates 68 AWS services behind one port, 4566. We analyze its Smithy-spec protocol routing, descriptor-driven service catalog, four storage modes, and real Docker execution — against LocalStack.
Paper notes on LLaMA covering its core strategy — train smaller models for longer on publicly available data, optimized for inference — the result where a 13B model beats 175B GPT-3, the RMSNorm/SwiGLU/RoPE architecture changes, the 2048-A100 training scale, and how it kicked off the open LLM ecosystem.
UJET is AI-Powered Cloud Contact Center Platform for Premium CX · Rails · GCP · Node.js · TypeScript · Kubernetes
Stepping helps companies and brands navigate complex carbon-neutral processes and climate action projects to build a sustainable future. · 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