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September 28, 2026

Senior Python Data Engineer

Senior • On-site

110 - 150 PLN/yr

Warsaw, Poland

Quick Facts

  • Role: Python Data Engineer
  • Work mode/location: Hybrid, Warsaw

Description

Work on Python-based projects including data warehouses and systems processing very large volumes of information. Co-create a critical banking application responsible for revenues management and stock reconciliation in a multi-cloud environment (AWS and GCP). Grow your capabilities in data, data integration, and database-focused solutions.

Responsibilities

  • Develop and maintain Python-driven data processing systems
  • Build and evolve ETL/ELT data pipelines
  • Create and optimize PostgreSQL queries for data analysis and performance
  • Diagnose data processing issues and keep production solutions stable

Requirements

  • Minimum 5 years of commercial experience in a Python/Data-related role
  • Strong Python experience in building and extending applications and workflows
  • Commercial experience with Pandas for data processing, transformation, and analysis
  • Experience processing very large datasets (billions of records, terabytes)
  • Ability to write efficient, scalable Python and optimize processing
  • Hands-on ETL/ELT experience in Python
  • Practical SQL knowledge with PostgreSQL
  • Ability to write and optimize SQL queries and analyze performance problems
  • Basic/good knowledge of partitioning and working with large tables
  • Ability to diagnose data processing issues and identify root causes across systems/sources
  • Ability to independently troubleshoot and maintain production solutions
  • English proficiency (B2/C1)

Benefits

  • Work on modern technologies and market trends
  • Competitive compensation
  • Social benefits: medical care, insurance, sports card
  • Friendly, supportive working atmosphere
  • Professional growth in Data, data integration, and database solutions

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