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September 16, 2026
Senior Python Engineer
Mid • On-site
135 - 145 PLN/yr
Warsaw, Poland
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Quick Facts
Role: Senior Python Engineer (hybrid, 2x/week)
Focus: Data quality solutions for a bank
Tech stack: Python, SQL, Google Cloud Platform
Description
You will co-build solutions that detect and eliminate data quality problems at the point data enters banking systems. The role focuses on developing data processing and validation components in Python and SQL, and maintaining data pipelines on GCP. You’ll also analyze root causes of data quality issues and collaborate on data validation rules and monitoring.
Responsibilities
Design and develop components for data processing and validation
Build integration applications and processes in Python and SQL
Implement mechanisms to control and monitor data quality
Develop and maintain data pipelines on Google Cloud Platform
Work with BigQuery, Dataproc, Dataplex, and Composer/Airflow
Analyze data quality problems and identify their sources
Collaborate with teams on defining and deploying validation rules
Participate in designing and building the data validation process
Develop and maintain code according to technical and architectural standards
Use dbt in transformation and data quality control processes
Requirements
Experience in roles such as Python Engineer / Data Engineer / Software Engineer on data-related projects
Very good Python
Very good SQL
Practical experience with Google Cloud Platform
Experience building and evolving data processing pipelines
Knowledge of BigQuery
Experience with Airflow / Composer
Knowledge of at least part of the GCP services related to data processing and management
Knowledge of dbt
Knowledge of building, versioning, and managing application artifacts
Strong analytical skills and ability to solve problems independently
Benefits
Real impact on how data is processed, validated, and managed in a large organization
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