Job Vacancy Linux Infrastructure Engineer (SC Clearance)

Gloucester

CGI

Job position Linux Infrastructure Engineer (SC Clearance)

Permanent

As soon as possible

Gloucester, England, United Kingdom

Published on 15/04/2026

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At CGI, you will play a key role in designing and operating secure, high-performance Linux-based infrastructure that supports mission-critical systems across the Space, Defence and Intelligence sector.

As a Linux Infrastructure Engineer, you will build resilient, scalable platforms that enable innovation and operational excellence. Working with advanced technologies and expert teams, you will take ownership of complex challenges, apply creative solutions, and grow your career within a collaborative and supportive environment.

The Space, Defence and Intelligence business unit in CGI is a true IT Systems Integrator. We work, build, and operate bespoke, technically complex, mission-critical systems which help our clients keep us all safe and secure. We bring innovation to our clients using proven and emerging technologies, agile delivery processes and our deep expertise across the breadth of space, defence, intelligence, aerospace and maritime, all underpinned by our end-to-end cyber capability. We work collaboratively with global technology companies, cutting edge SMEs and academia to deliver the optimal solution for each client.

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 be based on site near Gloucester 5 days a week.

Candidate profile

In this role, you will architect, deploy and maintain secure Linux-based infrastructure, ensuring high availability, performance and scalability across complex environments. You will take ownership of infrastructure automation, containerised platforms and system optimisation, supporting both project delivery and operational excellence.

Working closely with multidisciplinary teams, you will contribute to building resilient systems, improving deployment pipelines and driving continuous improvement. You will bring innovative thinking to infrastructure challenges while being supported by a collaborative and expert-led environment.

• Design & Deploy Linux-based infrastructure across enterprise environments

• Automate & Optimise systems using configuration management and scripting

• Orchestrate & Manage containerised platforms using Kubernetes

• Build & Maintain infrastructure-as-code and CI/CD pipelines

• Manage & Enhance storage solutions, backup and disaster recovery processes

• Monitor & Improve system performance, reliability and scalability

• Collaborate & Deliver with cross-functional teams to support mission-critical systems

Required qualifications to be successful in this role

You should have strong experience managing Linux infrastructure within enterprise or secure environments, with a focus on automation, scalability and reliability. A solid understanding of containerisation and infrastructure-as-code practices is essential.

• You should have strong experience with Linux distributions such as Red Hat or Rocky Linux

• Proficiency in scripting and automation (e.g. Python, Bash, Ansible)

• Experience with containerisation and orchestration tools such as Kubernetes

• Knowledge of infrastructure-as-code and CI/CD practices

• Experience managing storage solutions and backup/recovery processes

• Strong troubleshooting and system optimisation skills

• Familiarity with data tools such as NiFi (desirable)

• Experience working in secure or regulated environments (advantageous)

#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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Linux Infrastructure Engineer (SC Clearance)

CGI