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April 28, 2026

Senior Test Engineer – Data & AI

Senior • Hybrid

145 - 145 PLN/hr

Warsaw, Poland

contract: B2B

rate: 145 pln/h + VAT

mode: 2x a month from the office, Warsaw

As a Senior Test Engineer, you will be responsible for ensuring the quality, reliability, and performance of Data Hubs and data processing pipelines in Azure & Databricks. You will develop automated test frameworks, conduct regression testing, and validate large-scale data processing workflows.

How you will get the job done

·       designing, developing, and maintaining automated test frameworks for data processing and orchestration.

·       conducting regression, performance, and scalability testing for data ingestion and transformation.

·       implementing data quality validation and anomaly detection in Azure-based data pipelines.

·       collaborating with Data Engineers and DevOps teams to integrate testing into CI/CD pipelines.

·       ensuring compliance with data security, governance, and privacy standards.

·       defining test strategies, best practices, and documentation for Data & AI solutions

Skills and experience you will need

·       strong expertise in Python, PySpark, SQL, and test automation frameworks.

·       experience with Azure Data Services (Databricks, Data Factory, Storage Accounts).

·       proficiency in testing big data pipelines, distributed systems, and ETL workflows.

·       hands-on experience with CI/CD tools (Azure DevOps, Jenkins) and test automation.

·       strong understanding of data governance, quality frameworks, and monitoring tools.

·       excellent problem-solving skills and ability to work in Agile/Scrum environments.

Nice to Have

·       experience with ML model validation and AI pipeline testing

·       familiarity with data lineage tracking and metadata management tools