Hauke Tönjes

Team lead for software development at GRIMME Digital Solutions

Mostly C# on the backend, JavaScript and Dart on the front end. Off the clock I keep building things too — a few of them are below.

Projects

TypeScript · Next.js

Web app that added the EU digital vaccination certificate to Apple Wallet, entirely client-side — no certificate ever left the browser.

Dart · Flutter

Flutter package for grids that adapt their column count to the available width, instead of hard-coding one layout per breakpoint.