Python Developer | Backend & Data | FastAPI • PostgreSQL • Docker
Backend development, CI/CD automation, and data-focused engineering.
Python Developer with experience in backend development and CI/CD automation. Interested in working with data.
Flytronic S.A.
Apr 2026 — present · hybrid
CI/CD tooling and automation for manufacturing processes in electronics R&D. Server administration, internal web services, and engineering practices (code review, merge requests).
Pipelines for Docker builds and publishing, versioning, AsciiDoc → Confluence docs. Oversight of servers for CI/CD and dev environments.
Flytronic S.A.
Apr 2025 — Apr 2026 · on-site
Software for testing and operating complex specialized systems: Reflex web app for subsystem control, state reads, and test reports (PDF, JSON, Excel); REST integration layer consuming the test station API; internal pytest plugin with unified logging and parameterisation templates.
Apisense
Apr 2026 — present · remote · self-employed
Web application development using FastAPI and Reflex.
rkowalski.dev
Nov 2024 — present · remote
Business process automation, integrations, and LLM-based solutions.
KSeF: Polish National e-Invoice System API — auth, invoice XML send/receive, MoF-compliant validation. Blablex: async FastAPI with LangChain and e-commerce integrations. Mercator Medical Thailand: project takeover, audit, production deployment.
RFIDIO — RFID Technologies
Sep 2023 — Nov 2024 · remote · self-employed
Hotel inventory system from POC to commercial release in a five-person team. FastAPI backend, Pandas reporting (inventory automation, rotation analysis), Vue.js frontend, SQL optimisation and Docker deployments.
Dokodu sp. z o.o.
Apr 2023 — Jan 2024 · remote · freelance
Python web apps and AWS deployment in Agile/Scrum. Discord server management bot (Python, SQLite).
Open to discussing backend, data, and CI/CD opportunities — with interest in Data Engineering.