At least 5 years of experience in data engineering, including working with large-scale data platforms, Strong hands-on experience with Python, PySpark, SQL, and SparkSQL, Proven expertise in Azure Databricks, Azure Data Factory, and Delta Lake, Solid understanding of ETL/ELT design, medallion architecture, and metadata-driven frameworks, Experience with CI/CD pipelines, Azure DevOps, GitHub, Jenkins, and infrastructure as code, Willingness to work from the Warsaw office 2–3 days per week, Fluent Polish required, Residing in Poland required