Marcin Ostrowski

A CEO who still ships.

I'm a pragmatic builder. I run fryga, a product engineering consultancy in Kraków, and I still take things from idea to shipped: I connect code, product, design, and business, so I can go deep and carry a product end to end.

I write about building with Rails and AI at RubyOnAI, and I mentor at 42 Warsaw. I teach by showing my own scars: what I built, what broke, and the numbers.