Test Lead

Mastek; Greater London; On-site; GBP 100,000 - 125,000; Full time

Job summary

An established industry player is seeking a Test Specialist to join their dynamic team in Greater London. In this role, you will collaborate closely with data engineers to enhance ETL/ELT processes using cutting-edge tools like Databricks and Azure DevOps. Your expertise in data validation and automated testing will ensure the integrity and performance of data workflows. This is a fantastic opportunity to contribute to innovative projects while working in a supportive and collaborative environment that values your insights and skills. If you're passionate about data quality and eager to make an impact, we want to hear from you!

Qualifications

• Experience with PySpark or notebooks in Databricks.
• Knowledge of data warehousing or medallion architecture.

Responsibilities

• Collaborate with data engineers on ETL/ELT processes.
• Develop test plans and validate data accuracy.
• Monitor data pipeline executions and document results.

Skills

ETL/ELT processes

Data validation

Automated testing

Data accuracy

Regression testing

Integration testing

Performance testing

Tools

Databricks

Azure DevOps

Power BI

Job description

Direct message the job poster from Mastek

• Collaborate with data engineers to understand ETL/ELT processes using ADF and Databricks.
• Develop test plans and test cases for data pipelines, including transformation logic validation and end-to-end data flow.
• Validate data accuracy, completeness, and consistency across systems (e.g., landing, staging, transformation, and reporting layers).
• Implement automated data quality and validation tests.
• Perform regression, integration, and performance testing on data workflows.
• Participate in code reviews, defect triaging, and sprint planning sessions.
• Monitor data pipeline executions and investigate test failures or anomalies.
• Document test results, defects, and quality metrics.

Preferred qualifications:

• Experience with PySpark or notebooks in Databricks.
• Exposure to Azure DevOps, Unit Testing frameworks, or Great Expectations for data testing.
• Knowledge of data warehousing or medallion architecture (bronze, silver, gold layers).
• Experience with data visualization tools (e.g., Power BI) is a plus.

Seniority level

• Seniority level

  Associate

Employment type

• Employment type

  Full-time

Job function

• Job function

  Information Technology

• Industries

  IT Services and IT Consulting

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