Mateusz Palak
Mateusz Palak

When the AI writes Ruby,
I know when it's wrong.

Software engineer from Kraków. Changed careers after thirty and learned Ruby the stubborn way, line by line. These days I build with AI agents and vibe code my own apps in Swift, Kotlin, Go or Rust. Ruby is still the one I know inside out.

Things I'm building

A bit more about me

Ruby is my home. Years of shipping it taught me how Rails apps grow, break and get fixed, and that is what lets me trust an AI with the typing.

Day to day I build Ruby software that hundreds of thousands of Polish businesses run their invoicing on.

Outside work I lean on Claude Code and friends to ship more than one person reasonably should, in languages I would never have touched alone.

Say hello.

Not looking, but always up for talking Ruby or AI tooling.