Piotr Czerwiński · AI Product Engineer
Ships products end-to-end with AI agents in the loop — not just prompting them.
Senior product engineer in teams. Full-stack solo. 9 years across foreign companies. Since the Sonnet 4 → Opus 4.5 generation, AI agents became real co-engineers — they handle the tedious work end-to-end while I focus on what actually matters. Daily use of coding agents (Claude Code, Kiro CLI) — and knowing where they accelerate work and where they don't.
HiddenJobs.pl as proof — shipped solo end-to-end (NestJS, Postgres, Next.js, OpenAI), live, real users. Currently focused on shipping HiddenJobs.pl and Company Docs GPT v2. Open to conversations about AI Product Engineer, founding-team, or Forward-Deployed roles at AI-native companies — for now or further out.
Featured · solo-shipped
All work →HiddenJobs.pl
AI-matched 100% remote IT roles for Polish specialists — personalized over offers from foreign companies validated for Poland-collaboration.
Read the case study →
Currently
Senior Frontend Engineer at Shiji
Mar 2024 → present · Remote · Katowice, PL
Senior frontend role inside a global hospitality tech company — high-complexity enterprise codebase. Microservices architecture; maintainer of one core frontend repository and contributor across several others. Owning release management across the full environment matrix (test, uat, preprod, prod) and every region the platform serves globally.
Running HiddenJobs.pl
Solo · since Feb 2026
A live product I validated, built, launched, and now operate as a one-person team.