Job Vacancy Senior Infrastructure Engineer (DV Security Clearance)

Chippenham

CGI

Job position Senior Infrastructure Engineer (DV Security Clearance)

Permanent

As soon as possible

Chippenham, England, United Kingdom

Published on 25/01/2026

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At CGI, you’ll play a vital role in protecting and enabling some of the UK’s most critical defence capabilities. As an Infrastructure Engineer, you will help design, support and sustain secure, high-availability environments that underpin mission-critical operations. Working alongside trusted experts, you’ll take ownership of complex infrastructure challenges, apply creative problem-solving, and deliver resilient solutions that make a real-world impact. CGI empowers you to shape outcomes, innovate with purpose, and grow your career within a supportive, collaborative culture where your expertise genuinely matters.

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 position will require 5 days a week onsite in Chippenham.

Candidate profile

In this role, you will provide senior-level infrastructure support on a secure defence programme, working full time on client site in the Chippenham/Corsham area. You will take ownership of complex incidents, ensure the availability and security of critical systems, and contribute to continuous improvement across the platform. Supported by a collaborative CGI team, you’ll be trusted to apply your expertise, share knowledge, and help shape resilient, future-ready infrastructure.

You will also play a key role in proactive system maintenance, optimisation, and documentation, while participating in an on-call rota to support mission-critical services.

Key responsibilities include:

• Lead & Resolve: Provide expert support for VMware Cloud Foundation, Tanzu, Dell VxRail and Data Domain platforms

• Secure & Protect: Support key management and privileged access solutions including HashiCorp Vault, Thales HSM, BeyondTrust and Keycloak

• Optimise & Maintain: Administer Windows Server 2022, Hyper-V, monitoring, disaster recovery and business continuity solutions

• Collaborate & Improve: Work with cross-functional teams and maintain clear, accurate technical documentation

• Support & Respond: Participate in a 24/7 on-call rota for critical infrastructure

Required qualifications to be successful in this role

You will be an experienced infrastructure professional with a strong background in secure, complex environments, ideally within Defence. You bring a proactive mindset, strong troubleshooting capability, and a commitment to delivering high-quality, reliable solutions while working effectively as part of a trusted team.

You should have:

• Existing DV (Developed Vetting) clearance

• Proven experience in a senior infrastructure or support role

• Strong knowledge of VMware, Microsoft Windows Server and hyper-converged infrastructure

• Solid understanding of networking principles

• Excellent problem-solving skills and attention to detail

• Relevant certifications (VMware, Microsoft, Dell or security) are highly desirable

Desirable experience includes:

• Cross-domain and secure systems (e.g. Tiger Traps, Garrison, OpsWat, NiFi)

• DevOps and container technologies (GitLab, Harbor, FluxCD, Kubernetes)

• Elastic for logging 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 (DV Security Clearance)

CGI