Payments at scale. Now products with AI in the loop.
Software engineer in Köln. Three years on tokenized payments inside the Klarna App; since 2025 building a voice dictation app, a Kubernetes wargame, bots, agents and the box they run on.
The stack,
exploded.
Everything I ship is built from the same parts. Scroll to assemble them, top to bottom: the app, the speech model, the services, the messaging, the data, the cluster, the metal.
drag to rotate · click a label
assembly 0 %
All projects
Eighteen, including day jobs and the archive. Click any for the full story.
From working student to on-call owner to my own products.
Six years, two payment companies, one deliberate break.
0merchants served
0app users
0params fine-tuned
0public repos
0backup restore RTO
Got something that should exist?
Freelance, day-rate or project. German or English, remote or Köln. Reply within a day.