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Senior Data Engineer

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Cyclad Sp. z o.o.

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Location:
Poland

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Category:
IT - Software Development

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Contract Type:
B2B

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Salary:

140.00 - 160.00 PLN / Hour
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Job Description:

This role supports a large-scale transformation from SQL Server–based systems to a Databricks / Delta Lake platform. The focus is on enterprise-grade data engineering and software development, not analytics or reporting. The project is SQL2Databricks migration, it involves 3500-4000 SQL DBs (2TB), replicating data in different shapes/ schemas to Databricks.

Job Responsibility:

  • Support a large-scale transformation from SQL Server–based systems to a Databricks / Delta Lake platform
  • Transform complex, business-critical SQL logic (stored procedures) into clean, maintainable, and scalable Python / PySpark code
  • Redesign and implement this logic in Python / PySpark within Databricks
  • Contribute to a large, long-running data engineering codebase used by multiple teams
  • Develop production-grade transformation code (packages, modules, reusable components)
  • Design and evolve data models within a Medallion Architecture (Bronze / Silver / Gold) across multiple data layers
  • Ensure software engineering quality, reusability, and long-term maintainability
  • Apply software engineering best practices (clean code, OOP, modularization, refactoring)
  • Work with very large data volumes and highly parallel, event-driven transformations
  • Actively participate in code reviews and technical design discussions
  • Support orchestration workflows (e.g., Azure Data Factory)

Requirements:

  • Very strong Python and PySpark skills
  • proven experience with Databricks and Delta Lake
  • Experience working in large, shared codebases (beyond notebooks)
  • Strong SQL skills, especially reading and understanding complex logic
  • Solid object-oriented programming experience, clean code principles
  • Strong data modelling background (transactional and analytical)
  • Experience in redesigning models during platform migrations
  • Familiarity with layered data architectures (Bronze / Silver / Gold)
  • Very good English skills
  • Only candidates with citizenship in the European Union and residence in Poland

Nice to have:

  • Azure Data Factory (orchestration)
  • Azure DevOps, Git, CI/CD pipelines
  • Power BI or analytics tooling
  • Infrastructure / DevOps knowledge (not mandatory)
What we offer:
  • Remote working model
  • Dynamic and innovation-driven engineering environment
  • Private medical care with dental care (covering 70% of costs)
  • Multisport card (also for an accompanying person)
  • Life insurance

Additional Information:

Job Posted:
March 22, 2026

Employment Type:
Fulltime
Work Type:
Remote work
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