Regression Test Engineer

This is a Hybrid role based in Whiteley, Hampshire. This role will require attainment and maintenance of SC clearance.

We're looking for a Senior Integration Test Engineer to join our team and support the delivery of a large-scale systems integration programme. Working as part of a collaborative, multidisciplinary team, you'll help plan, design, and execute testing activities across a range of applications, interfaces, and infrastructure components. You'll work closely with colleagues, suppliers, and customer stakeholders to ensure solutions are thoroughly tested and meet quality expectations. This role is ideal for someone who enjoys problem-solving, analysing data, investigating issues, and working with a variety of technologies and teams.

What You'll Be Doing:

• Creating and reviewing test plans, test cases, and test reports.
• Designing and executing integration and regression testing activities.
• Working with technical experts and stakeholders to understand requirements and ensure effective test coverage.
• Recording and reporting test results, defects, risks, and issues.
• Investigating defects and supporting root cause analysis and resolution.
• Analysing test evidence and large datasets to demonstrate compliance with requirements.
• Validating data flows and interfaces between existing and new systems.
• Identifying opportunities to improve testing processes and ways of working.
• Supporting the development and maintenance of automated regression test packs.

What We're Looking For:

• Experience in software, systems, integration, or test engineering.
• Functional, non-functional, integration, and regression testing.
• Creating and executing test cases from requirements or design documentation.
• Working on projects involving multiple systems, applications, or third-party integrations.
• Investigating issues and supporting defect resolution.
• Analysing data and interpreting test results.
• Communicating effectively with both technical and non-technical audiences.
• Managing priorities and working independently as well as part of a team.
• A proactive approach and willingness to learn new technologies and tools.
• Ability to attend our Whiteley office as required.
• An ISTQB Foundation Certificate (or equivalent) is beneficial but not essential.

Nice to Have:

• Experience in test automation and automated regression testing.
• API, interface, or message-based testing.
• Network or infrastructure testing.
• SQL, data analysis, or log analysis tools.
• Agile, DevOps, or Continuous Integration environments.
• Working within secure or highly regulated environments.
• Large-scale systems integration programmes.

What we do for you:

At Leidos we are PASSIONATE about customer success, UNITED as a team and INSPIRED to make a difference. We offer meaningful and engaging careers, a collaborative culture, and support for your career goals, all while nurturing a healthy work-life balance. We provide an employment package that attracts, develops and retains only the best in talent. Our reward scheme includes:

• Contributory Pension Scheme
• Private Medical Insurance
• 33 days Annual Leave (including public and privilege holidays)
• Access to Flexible benefits
• Flexi Working

Commitment to Diversity: We welcome applications from every part of the community and are committed to a truly diverse and inclusive culture. We foster a sense of belonging, welcoming all perspectives and contributions, and providing equal access to opportunities and resources for everyone. If you have a disability or need any reasonable adjustments during the application and selection stages, please let us know, and we will respond in a way that best fits your needs.

Who We Are: Leidos UK & EUROPE – we work to make the world safer, healthier, and more efficient through technology, engineering and science. Leidos is a growing company delivering innovative technology and solutions focused on safeguarding critical capabilities and transformation in frontline services, our work in the United Kingdom includes addressing some of the most complex problems in defence, healthcare, government, safety and security, and transportation.

What Makes Us Different:

• Purpose: you can use your passion and abilities at Leidos to keep the people you care about safe.
• Collaboration: having flexibility to do your job is one of our core benefits, enabling you to become part of our extraordinary team.
• People: Leidos empowers people from every background to be themselves and gives you the tools to learn new skills by enabling growth whilst developing.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail.