Maciej Zieliński, Software Engineer

Python backend developer and fourth-year Computer Science student at PJATK in Warsaw. I build reliable backend systems and practical software, with a focus on Python, applied AI, computer vision, and real-time data.

Projects

  • pytest-queryguard: a pytest plugin for SQLAlchemy 2 that fails tests which hide N+1 queries and missing indexes. Published on PyPI.
  • CaseFlow: a tenant-aware backend with RBAC, session-backed authentication, document workflow state, audit logs, webhook delivery and background processing.
  • clip_to_text: a FastAPI, FFmpeg and Faster-Whisper transcription service with live job tracking and SRT export.
  • Motorsport_API: a Dockerized API for seasons, teams, drivers and race results with JWT authentication and OpenAPI documentation.
  • live_flights_map: a live aircraft map with OpenSky and ADSB.lol data, a Flask service and position replay.

Links