Timothy Yang / Design engineer
I design and build products.
I'm a UI/UX designer who also writes the code. Fourteen apps of my own on the App Store, and I keep working on the four below - before that, a startup's mobile product.
Open to design engineering roles · San Francisco Bay Area or US remote
Design case study · Untwine
Make room for the hard part.
A calm task manager for iPhone, Mac, Apple Watch and the web, where how hard a task feels sits beside priority and effort, and every task has a second layer for when it won’t move.
Design case study · Everywhen
Getting people to come back to a learning app.
A place-based learning app nobody needed to open twice, and how it became a daily where-and-when game people return to, down to the physics of a single sheet.
Design case study · Sleep Map
A habit with something to keep.
A sleep app where a kept night claims a real place on a real map, and a bad night never takes anything back.
Design case study · Ice Age Life
A whole world, one decision at a time.
A prehistoric life sim with a whole simulated band behind every screen, and how I kept it readable: what a player sees first, what each tap promises, and what the art and words are allowed to say.
More shipped
All work →Open to what’s next
Looking for a design engineering role.
San Francisco Bay Area or US remote.
Discuss an opportunity ↗






