Linux Administrator (DV Security Clearance)Linux Administrator (DV Security Clearance)
Position Description
CGI's Space, Defence, and Intelligence business unit is dedicated to delivering cutting-edge technical solutions that address the most complex challenges faced by government agencies. Our mission-critical systems are custom-built to ensure security, reliability, and innovation, helping our clients protect the nation and its people. We are currently seeking a Linux Admin to join our Secure Innovation & Advisory team, working collaboratively with clients to deliver impactful solutions.
CGI was recognised in the Sunday Times Best Places to Work List 2025 and has been named one of the 'World's Best Employers' by Forbes magazine. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you a member 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.
This role offers an exciting opportunity to engage with groundbreaking technologies in a dynamic and rewarding environment. At CGI, we are deeply committed to the growth and development of our team members, offering extensive learning opportunities to help you stay at the forefront of an ever-evolving technology landscape. Our culture values innovation, collaboration, and ownership, making it an ideal environment for self-motivated individuals to thrive.
Our roles are only available if you hold a UK Security Clearance and are a sole UK National due to the secure nature of the project. You will either hold a higher level clearance or be willing to obtain it. Any individual without security clearance is welcome to apply and will always be considered for this or wider opportunities in CGI, where appropriate.
This role will require you to work on site in London 5x per week.
Your future duties and responsibilities
-Diagnosing and solutioning problems with the system in production and non-prod
- Increase the efficiency of system deployments, freeing up more time for development opportunities
- Assisting the client in their 'Journey to the cloud' understanding Hybrid cloud and migration strategies
- Facilitate the journey from Isolated and zone based networks to "Zero Trust Implementation"
Required qualifications to be successful in this role
Minimum 2 years of hands-on experience as a Linux Systems Administrator, with proven expertise in managing and maintaining enterprise-grade Linux environments (e.g., Red Hat, CentOS, Ubuntu).
Strong knowledge of Linux command-line utilities, shell scripting (Bash, etc.), and system administration tasks including user and group management, file system permissions, software installations, and service configurations.
Experience in configuring and maintaining Linux servers, including performance tuning, system monitoring, patch management, and automation of routine tasks.
Familiarity with troubleshooting system issues, analysing logs, and performing root cause analysis for outages or performance degradation.
Working knowledge of networking concepts (e.g., TCP/IP, DNS, firewalls) in a Linux environment.
Experience with security hardening, user authentication, and compliance configurations for secure systems operation.
Exposure to cloud environments (e.g., AWS, Azure, GCP) or virtualised infrastructure (e.g., VMware, KVM) in a Linux context is advantageous.
Familiarity with infrastructure as code tools (e.g., Ansible, Terraform) or configuration management platforms is a plus.
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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.
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