Hej, I’m Erik

Design engineer based in Berlin.

Money is the most surveilled thing in your life. Every transaction watched, scored, and stored, often forever. It doesn’t have to be this way, and a small group of people are working to change it. I’m one of them.

I’m a Human Rights Foundation grantee working on Cashu, an open ecash protocol for bitcoin, descended from David Chaum’s 1983 work on untraceable digital cash. I’m also the Founding Designer at Hoseki, building proof of ownership infrastructure for bitcoin.

Right now I’m designing Cashu.me’s native Apple and Android apps, and lead product design on Numo, a point-of-sale app for accepting Bitcoin with a tap. I’m also building Zeile, SL Tracker, and The Cypherpunk Library, among others.

In my previous life I was a Senior UX Designer at Ericsson and a UX / UI Designer at Accenture.

Recent rotation

Email me at , or find me on X, Nostr, GitHub, and Substack. I read everything that lands.

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