1,000+ engineers
in our first week.

Duolingo for engineering judgment: a path, a streak, three minutes a day. I built the first production frontend, the app shell, the landing, the accessible design foundation, the celebration ladder and the share cards.

I wrote the design gate: a script that reads the tokens back out of the CSS, asserts contrast on the worst pixel, simulates two kinds of colour blindness, and carries eight negative controls that must trip before it passes.

Then I executed the rename from the working title to Altab across the whole codebase.