Hello there, I'm

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

  1. 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

    2026
  2. New 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

    2026
  3. Designing 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

    2026
  4. Expense 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

    2026
  5. Launchpad

    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

    2026
  6. Hello, 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

    2025
  7. Daily 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

Get in touch

Engineering, design, or the part you haven't figured out yet.

© 2026 Yunu Choi