DevOps & test infrastructure engineer

Balázs Pásztor

I’m a Hungarian DevOps engineer who came to it from operations and test automation. These days I work on test infrastructure, the part of delivery that tells a team quickly and reliably whether a change is safe to ship. Based in Basel, moving to Denmark.

Danish for “forget-me-not”

A self-hosted Danish flashcard app whose review scheduler is a machine-learning model, with a full MLOps loop built around it.

  • FSRS is the champion; challengers, including a LightGBM model, predict every review in shadow mode
  • Nightly retraining and evaluation, tracked in MLflow
  • A champion/challenger gate: bootstrap test over cards plus a calibration check
  • Grafana dashboards for model health and learning progress
  • A public model report, published by the pipeline itself
  • k3s
  • Ansible
  • Tailscale
  • GitHub Actions
  • PostgreSQL
  • MLflow
  • Grafana
  • LightGBM
  • FSRS

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