Karlsruhe · open to building

Engineering things.
Gathering people.

I’m Jan, an Industrial Engineering student at KIT working where hardware, AI, and ambitious communities overlap.

Jan Pfrenger outdoors in Karlsruhe
Student by title. Builder by default.
/proof

A few numbers behind the bio.

100+ GWgrid applications processed
1,900+founders across YFN
+320%cold-plunge community growth
100+people reached with Codex

Selected work

Things worth
making.

All projects

Build surfaces

More room
to experiment.

Two quieter corners of the internet for things that need space outside the portfolio.

From grids
to gadgets.

I spent two years in energy infrastructure coordinating grid connections for utility-scale battery storage. Useful, high-stakes work – and a very good way to learn that I want my career closer to the thing being built.

Now I’m going deeper into embedded systems, automation, and AI. On the side, I bring people together: founders, Codex builders, and a surprisingly committed group of year-round cold swimmers.

The longer story What I’m doing now

One more thing

Have a strange idea?
I’m listening.

Best for ambitious projects, builder meetups, and things that probably involve a prototype.