Hi, I'm stepcz 🛠️

Developer based in Warsaw, building things on the web for over a decade — these days mostly leading frontend architecture. But honestly? What really gets me going is the place where code meets AI.

What I work on

I play with agentic workflows — LangGraph, LangChain, sub-agents doing code review in parallel roles (security / quality / performance) and posting notes straight into GitLab. I build my own MCP (Model Context Protocol) servers so LLMs can talk to Strava, Figma and our internal platforms. I write and maintain Kubb, an open-source generator for types and React Query from OpenAPI — catching bugs at the type level, not in production. I just really like good tooling that makes the whole team faster.

Outside the editor

After hours I 3D-print things 🖨️ and tinker with engineering projects — I love watching a digital model turn into something you can hold. The camera usually comes with me to airshows: I shoot military aviation and post it on Instagram @stepek_av ✈️. A bit of engineering, a bit of history, a lot of jet noise.

Let's talk

Want to chat about AI, codegen, MCP — or just tinker on something interesting? Reach out.

Find me here: