Product
Designer

I design end to end, from research to shipped product, using AI along the way.

Seo-Jung
Choi

Based in Seoul

Available for new projects.

Ambiguity
to

Clear
Product

Selected
Work

01/04

CODI : COPD Early WarningSee more

Health tech Voice AI Remote Patient Monitoring

A patient's voice can reveal a COPD flare-up before they feel it. CODI turns a 30-second daily voice check-in into an early signal for care teams.

02/04

Duolingo Revamp : Custom AI TutorSee more

Language Learning Conversational AI Custom AI Tutor

Your tutor. Your topic. Your way of speaking. A customizable AI tutor that lets learners choose who teaches, what they talk about, and how they talk.

03/04

Acubook : Acupuncture Booking PlatformSee more

Health Tech Booking Platform

Comparing acupuncture clinics by price, insurance coverage, and availability, designed and built end to end.

04/04

Building With AI, End to EndSee more

AI Workflow Spline 3D Front-end Code

How I use Claude, Figma, and Spline to take a project from idea to shipped product, including how I built this site.