Infrastructure Engineers (DV Security Clearance )

At CGI, we partner with Defence clients to deliver critical data exploitation capabilities that strengthen national security and enable smarter, faster decision-making. As an Infrastructure Engineer, you will play a pivotal role in shaping and supporting secure, resilient platforms while guiding the migration of legacy services to MOD core cloud infrastructure. Working alongside senior client stakeholders, you will provide trusted technical insight, mitigate risk, and drive value across complex programmes. We empower you to take ownership of high-impact challenges, bring fresh thinking to complex problems, and collaborate within a supportive, expert-led environment where your contribution directly influences mission success., In this role, you will act as a trusted technical advisor within a client-side Defence environment, providing infrastructure expertise that ensures the successful delivery of secure, mission-critical capabilities. You will support legacy platforms while enabling their migration to MOD core cloud infrastructure, helping to reduce risk and improve long-term resilience. Working closely with project managers, architects, cyber security specialists and service delivery teams, you will bring clarity to complex technical challenges and ensure engineering coherence across Agile delivery teams.

You will take ownership of technical assurance activities, working with the client assurance lead to manage JSP 453 controls and support DEAB approvals, including achieving the appropriate authority to process. By collaborating with solution suppliers and senior stakeholders, you will drive value for money, unblock delivery challenges, and contribute to PI Planning to align infrastructure outcomes with programme objectives.

Provide & Advise: Deliver expert technical insight to client stakeholders across infrastructure, cloud migration and legacy support

Mitigate & Assure: Identify and resolve technical risks, leading JSP 453 control activities to support approvals and accreditation

Collaborate & Align: Work with architects, Scrum Masters and suppliers to ensure engineering coherence across Agile teams

Enable & Migrate: Support transition from legacy platforms to MOD core cloud infrastructure

Engage & Influence: Contribute to PI Planning and proactively engage stakeholders to drive successful delivery

To succeed, you will bring strong infrastructure engineering experience within secure or Defence environments, combined with proven consultancy skills and the ability to engage confidently with senior stakeholders. You will be comfortable navigating complex governance frameworks, supporting assurance processes, and influencing multidisciplinary teams to achieve shared outcomes.

You should have strong experience in infrastructure engineering, ideally within MOD or secure government environments

Proven knowledge of cloud migration and legacy platform support

Experience working with assurance frameworks such as JSP 453 and supporting ATO/AtT/iATO processes

Excellent verbal and written communication skills

Demonstrated ability in conflict resolution and stakeholder management

Strong team collaboration skills across technical and non-technical audiences

Proactive engagement style with multiple stakeholders

DV clearance (preferred) or willingness to undergo high-level clearance; must be a sole UK national and passport holder

CGI was recognised in the Sunday Times Best Places to Work List 2025 and has been named a UK 'Best Employer' by the Financial Times. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you a CGI Partner not just an employee. We are committed to inclusivity, building a genuinely diverse community of tech talent and inspiring everyone to pursue careers in our sector, including our Armed Forces, and are proud to hold a Gold Award in recognition of our support of the Armed Forces Corporate Covenant. Join us and you'll be part of an open, friendly community of experts. We'll train and support you in taking your career wherever you want it to go.

Due to the secure nature of the programme, you will need to hold UK Security Clearance or be eligible to go through this clearance.

Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you'll reach your full potential because… You are invited to be an owner from day 1 as we work together to bring our Dream to life. That's why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company's strategy and direction. Your work creates value. You'll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise. You'll shape your career by joining a company built to grow and last. You'll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons. Come join our team-one of the largest IT and business consulting services firms in the world. Discover CGI London, England, United Kingdom > 1000 employees IT services We are a global business with 91,500 professionals across hundreds of locations worldwide, providing end-to-end IT and business process services that drive our clients' businesses. In the UK alone, we have around 6,000 member-partners working across 19 towns and cities, doing everything from writing complex code to designing sophisticated software solutions. The work we do powers some of the most ambitious projects that touch the lives of many. Our approach sets us apart, characterised by our proximity model, international presence, expertise, and operational excellence. We organise our operations within metro markets where our clients have concentrated footprints, empowering our local teams to build trusted, in-person relationships. As you build your career here, you'll develop your skills, share your insights, and work side-by-side with colleagues and clients on innovative solutions that address the most complex issues. Our commitment to ownership, flexibility, and being approachable makes us easy to do business with. Join us, and together, as owners, let's turn meaningful insights into action to meet the needs and balance the interests of our clients, shareholders, communities, and each other. Benefits: - Insurance coverage - Medical benefits - Pension plan - Member Assistant Programme - Check4Cancer - Flexible time off - Share Purchase Plan - Member discounts - Dental benefits - Vision benefits - Profit Participation Plan - Health and Wellbeing Programme