Jan Pfrenger

hi, i'm jan. i study industrial engineering at KIT in karlsruhe and work on battery energy storage at arteus energy. previously at terra one.

i co-lead the young founders network chapter in karlsruhe, organize ice baths in local rivers, and build things on the side.

here's what i'm doing now. more about me.

Projects

Young Founders Network — co-lead of the karlsruhe chapter. non-profit for young founders under 25. 1,800+ members across DACH.
Ersti-Hilfe — a survival guide for first-year students at KIT.
Archaive (private) — digital archive tool, built with TypeScript.
Swimma — swimming companion app. track sessions, find spots.
Eisbaden Karlsruhe — weekly cold-plunge community. grew 3x since nov 2024.

more projects can be found on github.

Writing

What Cold Water Teaches You About Everything Mar 2026
Building YFN Karlsruhe from Zero Feb 2026
From Chemistry Prize to Energy Storage Jan 2026

more on the essays page.

Contact