Available for rolesPiotr Czerwiński

Currently taking a limited number of projects

I build and ship small products, fast.

Websites, small apps, and AI features - designed, built, and shipped solo with AI agents in the loop. Nine years of senior full-stack for companies in Germany, the Netherlands, the UK and the US, and two of my own products live in production. If you need something real shipped quickly and well, that is the whole job.

What I build

Websites & landing pages

Fast, SEO and GEO-first sites that actually get found - built on Next.js with a real design system, structured data, and Core Web Vitals in mind from the first commit. The kind of site that reads as considered, not as a template.

  • Next.js + Tailwind
  • SEO / GEO / schema.org
  • Own design system, light + dark

Small apps & MVPs

Idea to live, end-to-end. Auth, payments, a real database, and the unglamorous 40% (background jobs, admin, edge cases) that usually stalls a side project. I have shipped two products solo this way; I can ship yours.

  • Full-stack (Next.js / NestJS)
  • PostgreSQL, Stripe, auth
  • Deployed and running

AI features

RAG, agents, and LLM integrations wired into a real product, not a demo. Matching engines, document Q&A, automated pipelines - with the cost caps, rate limits, and abuse protection that keep an AI endpoint from becoming an open wallet.

  • OpenAI / RAG / agents
  • Cost caps + kill-switch
  • Production-grade guardrails

How I work

Fixed scope, fixed price

We agree what we are building and what it costs up front. No open meters, no surprise invoices. You know the number before I start.

Fast, because of how I work

AI agents handle the tedious end-to-end volume while I own the judgment: architecture, taste, and verification. That is what turns weeks into days without turning quality into slop.

Selective, and honest about it

I take a limited number of projects at a time and I will tell you plainly if yours is not a fit or if the timing needs to move. You get a straight answer, not a sales pitch.

Shipped and measured

You get a product that is instrumented and tested, not just handed over: analytics, error tracking, SEO and GEO, and tests on the paths that matter. You can see that it works.

Have something you need shipped?

Tell me what you are building and roughly when you need it. If it is a fit, I will come back with a scope and a fixed price. If it is not, I will say so and, where I can, point you somewhere better.