Backend engineer. I build Python backends and all the boring infrastructure around them: APIs, workers, integrations, automation. Most of my code runs unattended, so I mainly care about what happens when something breaks.
Freelance, based in Poland. Open to backend & automation work.
Stack: Python (FastAPI, asyncio) · PostgreSQL · Redis · Docker · Rust where Python isn't enough
SaaS Skeleton
Production-ready SaaS backend template: JWT + refresh, tenant isolation, billing-ready architecture, admin CRUD, metrics, health checks, structured logging.
GeM BidPlus Automation
End-to-end bid participation automation for India's government e-marketplace. Captcha OCR, OTP auto-fetch from email, smart flow resume, human-like behavior via Patchright.
DocumentPlaceholder
Fills Word templates from YAML. With its own tiny expression language (parser + AST), PDF export, and syntax-highlighting GUI.
BadWords · docs
Profanity filter that survives homoglyphs, unicode tricks, and creative typos.
Bendy
DDD scaffolding for Python backends: describe your domain, get models, repositories, use cases, DTOs and FastAPI routers.
Lynx Logger
Structured logging for async services, with context propagation between workers.
Case studies
Notes on problems I've had to solve: transactional outbox, websocket delivery guarantees, multi-tenant identity, secure file processing.
When not coding: soldering stuff, breaking my Linux, listening to metal.