Job Vacancy Senior Infrastructure Engineer (Security Clearance)

Chippenham

CGI

Job position Senior Infrastructure Engineer (Security Clearance)

Permanent

As soon as possible

Chippenham, England, United Kingdom

Published on 26/10/2025

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At CGI, we’re shaping the future of national security and defence through innovative, mission-critical IT systems that keep the UK safe. As part of our Space, Defence and Intelligence business unit, you’ll play a vital role in delivering secure, resilient infrastructure solutions that power some of the UK’s most advanced programmes. Working on site five days a week in Chippenham, you’ll collaborate closely with experts across CGI, our clients, and partners to design, support and optimise systems that drive real-world impact. This is your opportunity to contribute to meaningful, high-value work while being part of a supportive and forward-thinking environment where your ideas and ownership truly matter.

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. This is a full-time, on-site position based near Chippenham.

Candidate profile

In this role, you will ensure the resilience, reliability, and performance of complex infrastructure environments that underpin critical defence operations. You’ll provide hands-on technical support, proactive maintenance, and innovative solutions across a broad range of technologies, contributing directly to system integrity and mission success. Working closely with senior engineers, you’ll play a key role in enhancing infrastructure capabilities, developing your expertise, and helping CGI deliver excellence in every engagement.

Key responsibilities include:

- Support & Maintain: Deliver technical support for VMware, Tanzu, Dell VxRail, and Dell Data Domain platforms.

- Troubleshoot & Secure: Diagnose issues across key management and access systems such as HashiCorp Vault, Thales HSM, and BeyondTrust.

- Administer & Optimise: Manage Windows Server 2022, Hyper-V environments, and system performance monitoring.

- Collaborate & Document: Work with cross-functional teams to enhance infrastructure and maintain comprehensive documentation.

- Respond & Resolve: Participate in an on-call rota to ensure business-critical systems remain operational 24/7.

Required qualifications to be successful in this role

To succeed in this role, you’ll bring hands-on experience in infrastructure or support engineering, ideally within defence or other highly regulated environments. You’ll have a collaborative mindset, strong problem-solving ability, and a proactive approach to maintaining and improving secure systems.

You should have:

- Proven experience in infrastructure or support engineering.

- Experience working in Defence or other secure, regulated environments.

- Familiarity with VMware, Microsoft, or Security technologies (certifications desirable).

- Knowledge of Hyper-converged Infrastructure and network principles.

- Strong communication and teamwork skills.

Desirable:

- Knowledge of cross-domain technologies (e.g., Tiger Traps, Garrison, OpsWat, NiFi).

- Exposure to DevOps tools such as GitLab, Harbor, FluxCD, and Kubernetes.

- Familiarity with Elastic for monitoring and analytics.

#LI-SB2

Working environment

Together, as owners, let’s turn meaningful insights into action.

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

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Senior Infrastructure Engineer (Security Clearance)

CGI