I’m Przemek Mroczek. I build backend systems and write about the details most tutorials skip.

I’ve been writing software professionally for over 13 years, mostly on the backend — distributed systems, data pipelines, and the unglamorous infrastructure that keeps things running when nobody is watching.

Outside of work, I run a homelab. It started as a way to escape the compromises of streaming services and turned into a deeper interest in self-hosting done properly: network isolation, namespace boundaries, health checks, the whole stack. Most tutorials skip the parts that actually matter in production, and that gap is what I write about here.

I publish under the handle Lackoftactics on GitHub, where my open-source work lives.