Defence Mission Systems Engineer

Overview

Capgemini Engineering is looking for a Defence Mission Systems Engineer, with a passion to support cutting-edge defence orientated projects and experience of delivering and influencing MBSE processes. You will join our rapidly growing team to support our UK and overseas clients across a variety of defence projects. Our portfolio of projects includes work at all stages of the system lifecycle, from concept definition to in-service support.

We also offer consultancy services to improve organisation’s Systems Engineering & MBSE capabilities and enable digital transformation. Capgemini operate a hybrid working model with a combination of office and home-based working, along with occasional travel to client sites. As a Senior Systems Engineer you will be working alongside some of the top experts in the country on large and complex client engagements across a variety of projects, with opportunities to grow and take on responsibility from day one.

• Support the delivery of complex systems engineering projects using an MBSE-based approach, ensuring effective integration across wider engineering processes.
• Proactively engage with stakeholders at a range of organisational levels to elicit, analyse, and refine requirements, driving projects toward successful outcomes aligned with client needs.
• Lead and mentor team members, contributing to capability development, knowledge sharing, and fostering a high-performing team.
• Contribute to successful project delivery and account growth, through strong client relationships, knowledge capitalisation, continuous improvement, and collaboration.
• Provide technical leadership and authoritative guidance on SE/MBSE approaches, best practices, and modelling standards.
• Support the development and delivery of MBSE transformation initiatives across complex organisations, encompassing people, processes, and tools.
• Develop, configure, and maintain MBSE toolsets and project environments, ensuring robust traceability and effective tool integration.

• Engineering or science degree, with substantial experience delivering defence-related systems engineering projects.
• Experience of the specification, design, development or test of software intensive mission systems.
• Strong knowledge of industry-standard systems engineering processes across the full lifecycle, including requirements management, system design, and verification & validation.
• Demonstrated ability to build strong customer relationships, with proven stakeholder management and experience leading teams to deliver high-value outcomes.
• Hands-on experience with SysML and the application of MBSE methods, frameworks, and modelling standards in engineering projects.
• Proficiency with leading MBSE toolsets such as Enterprise Architect, Cameo Systems Modeler, Rhapsody, and Capella.
• Working knowledge of established MBSE frameworks (e.g., Magic Grid, Harmony, Arcadia, CESAM, OOSEM, SYSMOD, CORE).
• Experience integrating requirements management tools and processes within an MBSE approach to ensure robust traceability and consistency.
• Ability to work effectively in collaborative, multi-disciplinary environments with strong communication, influencing, and presentation skills.

• Exposure to top global companies working with Capgemini (145 of the Fortune 500 companies).
• Open access to digital learning platforms.
• Active employee networks promoting diversity, equity and inclusion like Out Front, Cap Ability or Women@Capgemini.

Capgemini Is Proud To Be a Disability Confident Employer (Level
2) Under The UK Government’s Disability Confident Scheme. We will offer an interview to all candidates who declare they have a disability and meet the minimum essential criteria for the role. Please opt in during the application process.

• All roles will require a level of security clearance; BPSS OR Security Clearance OR Developed Vetting.
• Due to the nature of the project, this role requires sole UK nationality in order to obtain the required level of security clearance.
• Location:
  
  London, South West, or South Coast.
• Hybrid Working: 2 - 3 days in the office, depending on client needs.
• You can bring your whole self to work. Capgemini is committed to an inclusive environment for everyone.

Capgemini is an AI-powered global business and technology transformation partner, delivering tangible business value. With a heritage of nearly 60 years, we are a responsible and diverse group of over 420,000 team members in more than 50 countries. We deliver end-to-end services and solutions with deep industry expertise, leveraging capabilities across strategy, technology, design, engineering and business operations. The Group reported 2025 global revenues of €22.5 billion.

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