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November 4, 2026
Data Engineer
Senior • On-site
41,932,800 - 57,657,600 PLN/yr
Warsaw, MA, Poland
Quick Facts
Role: Data Engineer (data engineering services)
Description
Design, build, and maintain data pipelines and ETL/ELT processes for both batch and streaming data processing. Implement transformations, validation rules, and data quality controls; integrate data from source systems into analytical target structures; and optimize SQL queries and data-processing performance for large volumes. Develop orchestration and monitoring mechanisms, prepare technical tests, maintain technical documentation, and support deployments and technical issue resolution in collaboration with data analysts and technical teams.
Responsibilities
Design, build, and maintain data pipelines and ETL/ELT processes
Implement batch and streaming data processing workflows
Create data transformations and validation/quality-control rules
Implement error identification and processing mechanisms
Integrate data from source systems into analytical structures
Optimize SQL queries and data processing performance
Analyze and improve solutions handling large-scale data
Develop orchestration and monitoring for data processing
Prepare technical tests and verify processed data correctness
Create and update technical documentation
Use code repositories and participate in code reviews
Support deployments and troubleshoot technical problems
Collaborate with data analysts, data modelers, architects, and maintenance teams
Requirements
Experience designing and implementing ETL/ELT processes
Experience with batch and/or streaming data processing
Very strong SQL knowledge
Knowledge of at least one programming or scripting language (e.g., Python)
Knowledge of data warehouse architecture and Data Lake/Lakehouse concepts
Knowledge of orchestration and monitoring concepts for data processing
Experience optimizing SQL queries and data-processing performance
Experience working with large data volumes
Ability to implement data quality assurance mechanisms
Experience working with code repositories and participating in code reviews
Experience preparing technical tests and documentation
Ability to collaborate with data analysts, architects, and technical teams
Independence, analytical approach, and ability to solve technical problems
Benefits
Opportunity to work on diverse projects across Software, Embedded, Data, and Cloud Services
Involvement in additional pre-seals and expert initiatives
Medical care, sports card, and cafeteria platform benefits per collaboration rules
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