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October 9, 2026

Data Engineer (Python / Azure)

Mid • Remote

130 - 150 PLN/yr

Warsaw, Poland

Quick Facts

  • Role: Data Engineer (Python / Azure)
  • Focus: ETL/ELT pipelines, REST API integration, JSON/XML processing, data validation, Azure services

Description

Build and maintain production ETL/ELT data pipelines that integrate with external REST APIs, ingest JSON/XML data, and apply validated transformations. Ensure data quality through validation, schema-drift handling, error logging, and support for reprocessing when source schemas change. Implement pipeline logging/monitoring, work with Git and CI/CD, and collaborate with the client team to clarify requirements and report technical issues.

Role Description

  • Integrate with external REST APIs: authorization, pagination, query limits, retry connections
  • Fetch, parse, and process data in JSON and XML formats
  • Implement data transformations and data structures according to the target architecture
  • Ensure data quality via validation, schema-change handling, and ability to reprocess data
  • Implement logging, pipeline monitoring, and error handling
  • Work with Git repositories and client CI/CD processes
  • Collaborate with the client team, clarify requirements independently, and report technical issues

Requirements

  • Minimum 3 years of commercial experience as a Data Engineer
  • Practical Python experience building and maintaining production ETL/ELT pipelines
  • Experience integrating REST APIs and processing JSON/XML data
  • Strong SQL knowledge
  • Experience with data validation, schema drift, error logging, and reprocessing; knowledge of Pydantic, Pandera, or Great Expectations
  • Practical experience with one or more Azure services: Azure Data Lake Storage, Azure Data Factory, Azure Functions, Azure SQL, Azure Databricks, or Microsoft Fabric
  • Knowledge of Git and CI/CD using Azure DevOps or GitHub Actions
  • English at least B2+ for interviews and daily client collaboration
  • Independence and ability to work within an existing team and technical environment

Benefits

  • Private medical care
  • Sports card subsidy
  • Ongoing support from a consultant
  • Employee referral program

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