Jieul Jang
Notes on product, taste, and the in-between. Also building AI workflows and agents.
Currently Senior Director, Business Planning at
Qcells USA.
Based in the San Francisco Bay Area. Writing at
Digestible UX with Young.
Architecture by training, strategy by career.
A decade across Korea, the U.S., and beyond, with stretches in Haiti and West Africa.
Venture investing and management consulting; now drawn to consumer products, AI, and beautiful things.
Photography as a way of seeing, with selections shown at contemporary art fairs.
Also cooking and swimming.
Building
Hermes, Wiki Engine, SecondBrain. Private for now.
GitHub, 2026. One square per day.
Notes
Digestible UX, monthly notes on AI and UX, co-authored with Young.
Photos
A room for photography. Gallery landing soon.