Senior Regression Test Engineer
Confirmed on the employer's own hiring board on Sep 25, 2026. First seen by Alion on Sep 25, 2026. Leidos scores A on the Alion truth index.
Senior Regression Test Engineer
Whiteley, Hampshire (Hybrid)
Security Clearance: Must be eligible to obtain UK Security Clearance (SC)
Help Deliver Mission-Critical Systems
We're looking for a Senior Regression Test Engineer to join our team in Whiteley. You'll play a key role in testing complex systems, ensuring new solutions integrate successfully and perform as expected.
Working closely with engineers, suppliers, and customer stakeholders, you'll help deliver high-quality solutions by planning, executing, and improving testing activities across a large-scale systems integration programme.
This is a great opportunity for someone who enjoys solving problems, investigating issues, and collaborating with a wide range of technical and non-technical teams.
What You'll Be Doing
- Create and maintain test plans, test cases, and test reports.
- Design and execute integration and regression testing activities.
- Work with stakeholders and subject matter experts to understand requirements and develop effective test coverage.
- Analyse test results, investigate defects, and support issue resolution.
- Report on testing progress, risks, and issues.
- Validate interfaces, data flows, and system integrations.
- Review large datasets and supplier evidence to verify compliance with requirements.
- Identify opportunities to improve testing processes and quality standards.
- Support the development of automated regression testing capabilities.
- Contribute to continuous improvement and knowledge sharing across the team.
What We're Looking For
We'd love to hear from you if you have experience in some of the following areas:
- Software testing, integration testing, or systems engineering.
- Creating and executing test cases from requirements or design documentation.
- Functional, non-functional, integration, or regression testing.
- Working on projects involving multiple systems, suppliers, or third-party integrations.
- Investigating issues and supporting defect resolution.
- Analysing data and test evidence to validate system behaviour.
- Strong communication skills and the ability to work with both technical and non-technical stakeholders.
- The ability to manage your own workload and work effectively within a team.
- A proactive approach and willingness to learn new tools and technologies.
- ISTQB Foundation (or equivalent) certification is beneficial but not essential.
Desirable Skills
Experience in any of the following would be advantageous:
- Test automation and automated regression testing.
- API, interface, or message-based testing.
- Network, infrastructure, or environment testing.
- Agile, DevOps, or Continuous Integration practices.
- SQL, data analysis, or log analysis tools.
- Working within secure or highly regulated environments.
- Supporting large-scale systems integration or transformation 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.
Working together as Team Leidos we are helping to transform the UK's defence supply chain by providing an integration of a complex mixture of services, at low risk, using a modern suite of systems that will deliver one version of the truth. For the first time, the MOD will see the whole picture, as it is happening.
What Makes Us Different:
Purpose: you can use your passion and abilities at Leidos to keep the people you care about safe. We are at the forefront of machine learning, AI, cyber security and solutions. Using your skills in the technology frontline by helping to build a safer world. You can inspire change.
Collaboration: having flexibility to do your job is one of our core benefits, enabling you to become part of our extraordinary team. We have been empowering our people to work flexibly for years. Whether you work from home, the office or on customer sites, we will give you the digital tools and the flexibility to work smarter and align your needs and ours.
People: Leidos empowers people from every background to be themselves and gives you the tools to learn new skills by enabling growth whilst developing. We believe that extraordinary people need opportunities to grow, to be inspired and to inspire others. At Leidos, we invest in technical academies, career rotations and a career development plans that that enhance your future.
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. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.
Original Posting:
For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
Pay Range:
£47,600.00-£61,000.00The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.