Automation QA Engineer (Data Engineering

Square One Resources Limited
Cardiff, United Kingdom
2 days ago

Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Working hours
Regular working hours
Languages
English
Experience level
Senior
Compensation
£ 156K

Job location

Cardiff, United Kingdom

Tech stack

Java
API
Amazon Web Services (AWS)
Data analysis
Automation of Tests
Azure
Big Data
Google BigQuery
Data Validation
Information Engineering
Data Governance
ETL
Data Warehousing
Database Queries
Distributed Systems
Github
Monitoring of Systems
Load Testing
SQL Databases
Systems Integration
Cloud Platform System
Snowflake
Spark
Backend
GIT
Data Lake
Gitlab-ci
REST
Software Version Control
Data Pipelines
Jenkins
Redshift
Microservices

Job description

  • Design, develop, and maintain automated test frameworks for microservices and backend systems.
  • Implement automated tests covering functional, regression, integration, and end-to-end scenarios.
  • Validate data pipelines and data builds, ensuring accuracy, completeness, consistency, and reliability of data across systems.
  • Perform data validation and reconciliation using SQL and other data analysis techniques.
  • Experience with performance or load testing.
  • Integrate automated tests into CI/CD pipelines and support quality gates throughout the delivery lifecycle.
  • Analyse test failures, identify root causes, and work with engineering teams to drive fixes.
  • Review requirements, designs, and technical solutions to identify quality risks early.
  • Mentor junior QA engineers and contribute to improving overall QA and automation maturity.

Requirements

We are seeking a Senior Automation QA Engineer to drive quality across microservices-based systems and data engineering platforms. This role requires strong hands-on experience in test automation, backend and API validation, and data pipeline testing, with the ability to work across complex, distributed architectures.The ideal candidate will collaborate closely with software engineers, data engineers, and product teams to ensure reliable, high-quality delivery of services and data products., The ideal candidate will have the following:

  • Strong experience in test automation for microservices-based architectures.
  • Hands-on experience building and maintaining automation frameworks using Java or similar languages.
  • Solid experience testing REST APIs, backend services, and service-to-service integrations.
  • Proven experience validating data engineering pipelines, including ETL/ELT workflows, batch jobs, and scheduled data builds.
  • Strong SQL skills for data validation, reconciliation, and analysis.
  • Experience working with data warehouses, data lakes, or big data platforms(e.g., Snowflake, Redshift, BigQuery, Spark).
  • Familiarity with integrating automated tests into CI/CD pipelines(e.g., Jenkins, Azure DevOps, GitHub Actions, GitLab CI).
  • Familiarity with version control systems(Git).
  • Experience working in cloud environments(Azure, AWS, or GCP).
  • Understanding of distributed systems and microservices architecture.

Desirable Skills/Experience Although not essential, the following skills are desired by the client:

  • Exposure to data quality frameworks or monitoring tools.
  • Experience working in Agile/Scrum delivery models.

About the company

Square One is acting as both an employment agency and an employment business, and is an equal opportunities recruitment business. Square One embraces diversity and will treat everyone equally. Please see our website for our full diversity statement.

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