Hello there, I'm Yunu Choi
Bringing AI systems one step closer to human
As a full-stack engineer at ElementX, I build production AI for enterprise clients, from the frontend architecture down to the LLMs and agentic frameworks underneath.
Outside my professional work, I spend nights vibe designing and building personal apps, where how it feels to use leads every decision.
Imakemagicalthingshappenwith
Hīkoi
A private, map first archive of walks around Aotearoa New Zealand. Closer to a shared photo album than a fitness tracker, and it keeps no totals.
Next.js · TypeScript · Supabase · Google Maps · +2
2026New Zealand School of Korea
The site for a Korean language school in New Zealand, written in Korean for its families and mapping each school grade onto the local Year.
Astro · React · TypeScript · Tailwind CSS · +1
2026Designing the Vibe
A talk for engineers on designing interfaces with AI, built as a React deck set in serif on parchment rather than the usual purple gradient.
React · TypeScript · Vite · MUI · +2
2026Expense Tracker
A personal finance dashboard for New Zealand bank accounts, set in the register of a bank. It opens on transactions already sorted and categorised.
React · TypeScript · Vite · MUI · +3
2026Launchpad
An AI brainstorming canvas that turns one keyword into a mind map on a pale starfield, with a rocket that lifts off while the ideas are written.
React · TypeScript · Vite · React Flow · +3
2026Hello, Yunu
This site. A portfolio set in one continuous night sky, where the name is drawn as an asterism and the works hang together as a constellation.
React · TypeScript · Vite · Emotion · +2
2025Daily Trivia Email Bot
A daily trivia email in Korean, written by GPT-5 and shaped to read in under a minute. The interface is the inbox, so there is nothing to open.
Python · OpenAI · GitHub Actions · PythonAnywhere
2025