Job Vacancy Senior Test Engineer - DESNZ - SEO

• Lead the design and implementation of comprehensive quality strategies across platforms like Salesforce, Azure, and AWS, including test approaches (unit, integration, API, UI, performance, security, accessibility) and automation frameworks using C#, Python, Apex, and TypeScript.

• Own test planning and execution for delivery initiatives, establishing quality gates, risk-based test plans, and release readiness criteria aligned with architectural standards, non-functional requirements, and delivery timelines.

• Collaborate with cross-functional teams—including product owners, stakeholders, architects, and developers—to translate requirements into clear, testable acceptance criteria and ensure shared understanding of quality goals.

• Ensure robust test coverage for data workflows, including validation of data migrations, schema evolution, and integration/contract testing to support secure and seamless system interoperability.

• Develop and maintain reusable test assets and automation suites, fostering scalable testing practices across cloud platforms and embedding quality into CI/CD pipelines for reliable build validation and release verification.

• Mentor engineers and champion a culture of technical excellence, conducting reviews of test designs and automation code, resolving complex quality issues, and driving continuous improvement through emerging tools, practices, and metrics.

The above responsibilities are not exhaustive, and the post holders may be required to undertake some additional tasks not listed above, within the remit of their grade, to support the team.

Essential criteria 

• Proven test automation skills using tools like Selenium, Playwright, Cypress, pytest, xUnit/NUnit, or Jest for functional, integration, API, and end-to-end testing.

• Hands-on cloud testing experience with AWS and/or Azure, including validation of distributed services and core cloud components.

• CI/CD integration expertise, embedding automated tests into pipelines (e.g., GitHub Actions, Azure DevOps) to support fast and reliable delivery.

• Strong quality engineering mindset, with experience in defining test strategies, implementing shift-left practices, and establishing quality gates across the SDLC.

• Experience in performance, reliability, and security testing, including load/stress testing, vulnerability scanning, and compliance with OWASP and data protection standards.

• Comfortable with modern Agile practices, accessibility testing (WCAG 2.2 AA), and collaborative problem-solving in multidisciplinary teams.

See job description for desirable criteria 

Birmingham, Cardiff, Darlington, Edinburgh, London, Salford

The Integrated Corporate Services (ICS) is a new shared corporate service, launched in July 2023. It provides corporate services (HR, Finance, Digital, Commercial, Security and Estates) across the Department for Energy Security & Net Zero (DESNZ) and the Department for Science, Innovation & Technology (DSIT).

Our team of just over 300 professionals will be leading the way in how these functions will be delivered in the future. Our ambition is to be the leading provider of integrated corporate services for government and set the standard for quality, efficiency, and innovation in our field.

We offer great working benefits including a world-class pension, flexible working options and a career where your learning and development is taken seriously. We are enormously proud to be a Disability Confident Leader employer. We support candidates with adjustments throughout our recruitment process. Information about disability confidence and just some examples of the adjustments that you can request can be found in the reasonable adjustment section below.

The Civil Service is committed to attract, retain and invest in talent wherever it is

found. To learn more please see the  and the 

Find Out More

You can also follow our LinkedIn Careers Page: 

Artificial Intelligence

Artificial Intelligence can be a useful tool to support your application, however, all examples and statements provided must be truthful, factually accurate and taken directly from your own experience. Where plagiarism has been identified (presenting the ideas and experiences of others, or generated by artificial intelligence, as your own) applications may be withdrawn and internal candidates may be subject to disciplinary action.  Please see our  for more information on appropriate and inappropriate use.