Defence Mission Systems Engineer

Capgemini Engineering; Greater London; Hybrid; GBP 65,000 - 90,000; Full time

Benefits offered by this job

Digital learning platforms

Employee networks supporting diversity

Disability Confident Employer

Job summary

Capgemini Engineering is seeking a Defence Mission Systems Engineer to support MBSE-driven defence projects across UK and overseas clients. You will work on lifecycle activities from concept to in-service support, and contribute to MBSE transformations using our REVEAL framework.

Hybrid working with some travel to client sites is involved. The role offers growth opportunities and exposure to top experts in the field.

Qualifications

• Engineering or science degree required with substantial experience in defence-related systems engineering.
• Experience with specification, design, development or testing of software-intensive mission systems.
• Solid knowledge of full lifecycle SE processes: requirements, design, verification & validation.
• Demonstrated capability to build customer relationships and lead teams.
• Hands-on with SysML and MBSE methods, frameworks, and modelling standards.
• Proficiency with MBSE toolsets: Enterprise Architect, Cameo, Rhapsody, Capella.
• Exposure to frameworks like Magic Grid, Harmony, Arcadia, CESAM, OOSEM, SYSMOD, CORE.

Responsibilities

• Support delivery of complex systems engineering projects using an MBSE-based approach with strong traceability.
• Engage with stakeholders to elicit and refine requirements for client-aligned outcomes.
• Lead and mentor team members to develop capability and knowledge sharing.
• Contribute to project delivery and account growth through client relationships and collaboration.
• Provide technical leadership on SE/MBSE best practices and modelling standards.
• Support MBSE transformation initiatives across organisations, covering people, processes, tools.
• Develop, configure and maintain MBSE toolsets and project environments with robust traceability.

Skills

Defence systems engineering

MBSE and SysML

MBSE tools (EA, Cameo, Rhapsody, Capia

Education

Engineering or science degree

Tools

Enterprise Architect

Cameo Systems Modeler

Rhapsody

Capella

Job description

Capgemini Engineering is looking for a Defence Mission Systems Engineer, with a passion to support cuttingedge 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. As well as directly supporting the delivery of complex systems engineering projects for our clients, we also offer consultancy services to improve organisation’s Systems Engineering & MBSE capabilities and enable digital transformation.

We ensure that we are offering good practice, taking into account both established and emerging technologies and techniques, adopting latest toolsets and frameworks, supplemented by techniques such as mathematical simulation, digital visualisation and our own REVEAL® Requirements Engineering Framework to enhance MBSE and Digital Engineering solutions delivered to our clients.

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 within Capgemini, you will be working alongside some of the top experts in the country, on some of the largest and most complex client engagements across a variety of projects. You will begiven the opportunity to grow and take on responsibility from day one in a challenging but rewarding and environment.

What you’ll do

• 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.

Your Profile

• 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.

If you're excited about this role but don’t meet every requirement, we still encourage you to apply, your unique experience could be just what we need.

Make it real – what does it mean for you?

• 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 OutFront, CapAbility or Women@Capgemini

Capgemini is proud to be a Disability Confident Employer (Level 2) under the UK Government’s Disability Confident scheme. As part of our commitment to inclusive recruitment, 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.

Capgemini. Make it real.

Need to know

• 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 levelof 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. At Capgemini building an inclusivefuture is part of everyday lifeand will be part of your working reality. We havebuilt a representative and welcoming environment, foreveryone.

About Capgemini

Capgemini is an AI-powered global business and technology transformation partner, delivering tangible business value. We imagine the future of organisations and make it real with AI, technology and people. With our strong 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 our deep industry expertise and strong partner ecosystem, leveraging our capabilities across strategy, technology, design, engineering and business operations. The Group reported 2025 global revenues of €22.5 billion.