Nice to meet you, Mercari.I’m Christoph.
I design systems that scale across brands and platforms, working closely with engineering so they actually get used. Currently based in Berlin, looking to move to Tokyo.
Scaling ToolTime's design systemSemantic token architecture, Figma-to-code workflow, and team adoption strategy for a multi-brand design system.
ToolTime PayBank transfers, reconciliation, and dunning for German tradespeople. Designed around the edge cases when automation fails.
Time tracking for craftsmenMobile-first time tracking for craftsmen juggling ladders, calls, and unpredictable schedules.
Kanji writing app · Side projectCurrently building an iOS app for writing kanji with correct stroke order using Apple Pencil. Needed a tool that didn't exist, so I built it.