About
I carry the problem all the way through.
I’m EJ Jung (Euijin Jung), a product designer, co-founder and builder. I work across strategy, research, design and code, on healthcare products, government research-data platforms and AI-assisted services.
- Based in
- Ann Arbor, Michigan
- Now
- Product designer, ICPSR
- Building
- Fixli, as co-founder
- Studying
- M.S. Applied Data Science, University of Michigan
Across the five steps
Where I’ve worked on each project
The work
What I did on each project
Yerbba · co-founder
Patients were leaving appointments with clinical information they couldn’t use. I did what the work needed: business planning, user interviews, service design, front-end engineering and the AWS setup underneath. Yerbba is still live, run by my co-founder. Case study →
Fixli · co-founder
Homeowners and handymen often circle each other without a shared language for cost, trust or scope. I designed the two-sided workflows and the AI’s behavior, built key features and shaped the database underneath. Fixli went live on November 1, 2026. Case study →
ICPSR · product designer
For ResearchDataGov I took over the design in 2022, finished the screens and developer-ready specs, and supported the MVP build. I started the File Service renewal in April 2022 and still support it. I ran Mosaic’s pilot and have led the design system since August 2024.
Why the range
Depending on the project, that has meant a business model, a token architecture or a database schema. I work on whichever one the problem needs.
How I work
Four habits
- 01Structure before screensBefore I sketch, I want the system: which states exist, what moves between them, where errors happen, and what users believe is happening versus what is.
- 02I buildI’ve written production front-end code, worked on back-end APIs and shaped database design at both companies I co-founded. Figma, HTML, CSS, React, Python.
- 03I writeWriting makes me state a point of view early, which makes me easier to work with.
- 04I measureI’m finishing an M.S. in Applied Data Science, because complex service problems tend to end up as measurement questions.
Experience
From set-top boxes to research data
- 2025 — presentFixliCo-founder · Design & engineeringA two-sided home repair marketplace where AI turns a photo into a brief and a cost estimate. Live since November 1, 2026.
- 2021 — presentICPSRProduct designerResearchDataGov, the Mosaic design system and File Service.
- 2018 — 2021Yerbba Corp.Co-founder · Design lead · Full-stack developerA consumer health platform for breast cancer patients. Research, service design, front end and AWS.
- 2018 — 2020I-tech USA, Inc.UX designerRedesigned the business identity and website to simplify the user flow.
- 2017Kellogg Eye Center, University of MichiganInteraction designerInteractions and introductory videos, made with ophthalmologists, for 100+ glaucoma patients.
- 2015 — 2016Radnet (HTeleRad)UX designerWeb, mobile and medical image viewer interfaces for radiologists and practitioners.
- 2012 — 2014HumaxUI designerProduct specifications for set-top box engineering, and a multilanguage translation management tool.
Education & skills
Degrees and tools
- M.S. Applied Data ScienceUniversity of Michigan2024–2027, expected Fall 2027
- M.S. Health InformaticsUniversity of Michigan2018
- B.S. Contents Convergence DesignHandong Global University2012
Design
- Product design
- UX research
- Interaction design
- Design systems
- Information architecture
- Figma
Research & data
- Mixed methods
- Usability testing
- Behavioral analytics
- Data visualization
Engineering
- React
- HTML / CSS
- PostgreSQL
- AWS
- Python