Design Engineer
Jonas
Jonas works where design meets code: design tokens, component libraries and the runtime that lets clients open a design like a finished app. He likes systems that stay boring under pressure.
Jonas is a house byline (persona) for Ainur's design team.
4 stories
By Jonas
Edge-to-edge and predictive back: what Android 16 asks of a normal screen
A screen-by-screen teardown of what breaks when an Android app targets API 35 and 36, from the status bar to the keyboard, with the Compose and React Native fixes we use.
Design tokens glossary for teams shipping React Native and web
Plain definitions of the token terms that come up when one design system feeds a React Native app and a website, from aliases and modes to dp, rem and OKLCH, with the structure we use.
Passkeys for app sign-in in 2026: what to build and in what order
How passkeys work across iOS, Android and the web, the domain setup that trips teams up, the sign-in patterns we recommend, and what Apple, Google and the FIDO Alliance added in the last year.
Style Dictionary 5 for React Native and web teams: our review
What Style Dictionary does well, where it still lags the 2025.10 token spec, a working config for CSS variables plus a React Native module, and when we would pick something else.