Linux System Engineers

CGI Group Inc.; City of Westminster; On-site; GBP 59,000 - 71,000; Full time

Job summary

A leading technology firm in the UK is seeking experienced System Engineers to join a cross-functional team. The role involves diagnosing and resolving system issues in Linux environments, administering enterprise systems, and supporting cloud adoption. Candidates should have at least 2 years of experience and expertise with Linux distributions. The position offers a competitive salary, full-time employment, and additional benefits, including a generous pension scheme and private healthcare. Eligibility for UK Security Clearance is required.

Benefits

Generous pension scheme

Private healthcare

Share scheme (3.5% plus 3.5% matching)

Qualifications

• At least 2 years' experience as a Linux Systems Administrator.
• Strong hands-on expertise with enterprise Linux distributions.
• Experience with security hardening and secure system configurations.

Responsibilities

• Diagnose and resolve system issues across production and non-production Linux environments.
• Administer and maintain enterprise Linux systems.
• Support and enable cloud adoption and migration activities.

Skills

Linux command-line tools and shell scripting

Troubleshooting issues and root cause analysis

System monitoring and patching

Networking concepts in Linux environments

Security hardening and secure system configurations

Tools

Red Hat

CentOS

Ubuntu

Job description

CGI's Space, Defence and Intelligence business unit focuses primarily on the delivery of contemporary and innovative technical solutions for government agencies and their most challenging problems. We work, build, and operate bespoke, technically complex, mission‑critical systems that help keep our clients safe and secure. We are looking for experienced System Engineers to join our cross‑functional team who will help define, guide and assure the delivery of integrated solutions. The role offers fantastic opportunities to work within an interesting and highly rewarding environment and is highly committed to developing our members with excellent learning and development opportunities.

Due to the secure nature of this project, candidates must either already hold or be eligible to obtain a high level of UK Security Clearance, requiring sole British nationality, UK residency for the past 10 years, and no more than 28 consecutive days outside the UK within the last five years. If you do not currently hold clearance, you are still encouraged to apply and will be considered for this position or other suitable opportunities within CGI.

Responsibilities

• Diagnose and resolve system issues across production and non‑production Linux environments.
• Administer and maintain enterprise Linux systems, ensuring stability and performance.
• Optimise and automate deployments to improve efficiency and reliability.
• Support and enable cloud adoption, hybrid architectures, and migration activities.
• Contribute and implement security improvements, including zero‑trust approaches.
• Collaborate and advise clients and internal teams on best practices and improvements.

Qualifications

• At least 2 years' experience as a Linux Systems Administrator.
• Strong hands‑on expertise with enterprise Linux distributions (Red Hat, CentOS, Ubuntu).
• Proficiency with Linux command‑line tools and shell scripting.
• Experience with system monitoring, patching, performance tuning, and automation.
• Proven ability to troubleshoot issues and perform root cause analysis.
• Working knowledge of networking concepts in Linux environments.
• Experience with security hardening and secure system configurations.
• Exposure to cloud, virtualised infrastructure, or infrastructure‑as‑code tools is advantageous.
• DV Security Clearance (or willingness and eligibility to obtain) and sole UK nationality.

Company Culture & Benefits

Life at CGI is rooted in ownership, teamwork, respect and belonging. You are invited to be an owner from day one as we work together to bring our dream to life. We benefit from our collective success and actively shape our company's strategy and direction. Your work creates value, and you’ll 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.

We offer a competitive salary of £70,238 per year (estimated) and full‑time employment. Additional benefits include a generous pension scheme, private healthcare, and a share scheme (3.5% plus 3.5% matching). We are committed to inclusivity, building a genuinely diverse community of tech talent, and inviting everyone to pursue careers in our sector, including our Armed Forces.

We are proud recipients of the Gold Award in recognition of our support of the Armed Forces Corporate Covenant and have been named one of the 'World's Best Employers' by Forbes magazine.