Amentum is a global leader in engineering, project and programme management, and solutions integration. Built on strong programme and engineering delivery experience, supported by deep specialist capabilities, Amentum is a recognised partner across major UK Government and commercial programmes.

People are at the centre of what we do. We offer a competitive package designed to attract and retain talent. In addition to standard benefits, UK employees receive free single medical cover, digital GP services, enhanced family‑friendly policies, employee assistance programmes, and reimbursement for professional development. Our community initiatives include matched‑funding schemes, paid volunteering, and charitable contributions.

About the Opportunity:

Amentum are offering an exciting opportunity to join our growing team of IT professionals to work on a range of projects for our diverse client portfolio that covers Critical National Infrastructure, National Security, Defence and Nuclear market sectors. Our team is growing and are we looking for proactive and collaborative professionals of all levels to work within us in providing a range of services to our clients. With our deep technical, commercial, and strategic expertise we develop solutions that address our client’s critical challenges supporting digitalisation and security.

We are looking for a Systems Integration & Test (SI&T) professional with strong experience in Defence environments, integrating complex systems, and ensuring end-to-end operability across multi-domain architectures. This role goes beyond just test execution, requiring understanding of how systems, interfaces, and data flows come together within a broader system-of-systems context.

Key Responsibilities:

• Lead / support the integration of complex systems, ensuring interoperability across hardware, software, networks, and data layers.

• Identify, analyse, and resolve integration issues across system boundaries, including APIs, data flows, and network interfaces.

• Develop and manage integration and test artefacts (plans, cases, scripts, reports), ensuring traceability to requirements and architecture.

• Collaborate with systems engineers, architects, developers, and security teams to ensure coherent end-to-end solutions.

• Support verification and validation activities, ensuring that integrated systems meet functional, performance, and security requirements.

• Contribute to integration risk management, defect resolution, and continuous improvement of integration and test approaches.

Here's What You'll Need:

• Degree qualified in Engineering, Computer Science, Systems Engineering, or related discipline (or equivalent experience).

• Excellent analytical and problem-solving skills.

• Strong communication skills, able to engage with both technical and non-technical stakeholders.

• Ability to work collaboratively within multi-disciplinary teams.

Experience:

• 3-5 years proven experience in Systems Integration and Test within UK Defence or similar high-assurance environments.

• Strong experience integrating complex, multi-system solutions (system-of-systems).

• Experience of test planning, management, execution, and reporting.

• Experience working across system lifecycles (e.g. CADMID), including integration, verification, and validation phases.

• Experience working with multiple stakeholders, including suppliers and partner organisations.

• Experience with networked systems and integration across distributed environments.

• Knowledge of test and integration methodologies (e.g. V-model, Agile, DevSecOps).

• Experience with integration and test tooling (e.g. test management tools, automation frameworks, CI/CD pipelines).

• Ability to analyse system behaviour, troubleshoot issues, and identify root causes across complex architectures.

Standards & Frameworks:

Understanding of systems engineering and integration standards (e.g. ISO/IEC/IEEE 15288).

Awareness of security and interoperability considerations within Defence systems.

Our Culture:

Our values stand on a foundation of safety, integrity, inclusion, and diversity. We put people at the heart of our business, and we genuinely believe that we all succeed by supporting one another through our culture of caring. We value positive mental health and a sense of belonging for all employees.

We aim to embed inclusion and diversity in everything we do. We know that if we are inclusive, we are more connected, and if we are diverse, we’re more creative. We accept people for who they are, regardless of age, disability, gender identity, gender expression, marital status, mental health, race, faith or belief, sexual orientation, socioeconomic background, and whether you’re pregnant or on family leave. This is reflected in our wide range of Global Employee Networks centred on inclusion and diversity.

We partner with VERCIDA to help us attract and retain diverse talent. For greater online accessibility, please visit Promoting Equality & Diversity in Jobs and Career - VERCIDA to view and access our roles. As a Disability Confident employer, we will interview all disabled applicants who meet the minimum criteria for a vacancy. We welcome applications from candidates who are seeking flexible working and from those who may not meet all the listed requirements for a role.

Your application experience is important to us and we’re keen to adapt to make every interaction even better. We welcome feedback on our recruitment process and if you need more from us before deciding to join us then please let us know.