Linux System Administrator

Sanderson Government & Defence provided pay range

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Base pay range

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Location: Gloucestershire, UK (On-Site)

Employment Type: Full-time, Mid-Senior level

About the Opportunity

Sanderson is collaborating with a leading global technology organisation delivering mission-critical infrastructure and secure digital services across the public sector. The team is expanding and looking for Senior Linux System Administrators to join a high-performing environment working on nationally significant projects.

You’ll be part of a skilled technical team responsible for maintaining and improving secure Linux environments, ensuring stability, performance, and compliance. The role offers hybrid working and exposure to some of the most advanced secure computing environments in the UK.

Key Responsibilities

• Provide 1st and 2nd line technical support for Linux-based systems and infrastructure
• Monitor overall system performance, proactively identifying risks or issues
• Develop and maintain system documentation and operational procedures
• Implement, support, and maintain standards, policies, and procedures for continual service improvement
• Collaborate with internal teams to enhance automation and system reliability
• Strong knowledge of Linux system administration (RHEL/CentOS 6/7/8)
• Experience working to ITIL best practices
• Excellent organisation, time management, and troubleshooting skills
• A proactive mindset focused on process improvement and root cause analysis
• Strong communication skills and willingness to share knowledge within a team
• Automation tools: Ansible, Puppet
• Scripting: Bash, Python, Git
• Cloud: AWS
• Solid understanding of command line interfaces (CLI)

Security Clearance Requirements

Due to the nature of the work, candidates must be eligible for national security clearance. To meet this requirement, applicants must:

• Be sole British citizens (dual nationality is not permitted)
• Have not spent more than 30 consecutive days outside the UK in the past 10 years
• Have no criminal recordHave no significant financial irregularities (e.g. bankruptcy, outstanding debts)

Unfortunately, candidates who do not meet these criteria cannot be considered for this position.

Why You’ll Enjoy Working Here

• Competitive salary and comprehensive benefits package
• Hybrid working environment with flexible options
• Access to industry-leading learning & development resources
• Opportunities to work on high-impact, mission-critical projects
• A strong emphasis on collaboration, wellbeing, and career growth

• Strong knowledge of Linux system administration (RHEL/CentOS 6/7/8)
• Experience working to ITIL best practices
• Excellent organisation, time management, and troubleshooting skills
• A proactive mindset focused on process improvement and root cause analysis
• Strong communication skills and willingness to share knowledge within a team
• Automation tools: Ansible, Puppet
• Scripting: Bash, Python, Git
• Cloud: AWS
• Solid understanding of command line interfaces (CLI)

Due to the nature of the work, candidates must be eligible for national security clearance. To meet this requirement, applicants must:

• Be sole British citizens (dual nationality is not permitted)
• Have not spent more than 30 consecutive days outside the UK in the past 10 years
• Have no criminal recordHave no significant financial irregularities (e.g. bankruptcy, outstanding debts)

Unfortunately, candidates who do not meet these criteria cannot be considered for this position.

Why You’ll Enjoy Working Here

• Competitive salary and comprehensive benefits package
• Hybrid working environment with flexible options
• Access to industry-leading learning & development resources
• Opportunities to work on high-impact, mission-critical projects
• A strong emphasis on collaboration, wellbeing, and career growth

Sanderson is collaborating with a leading global technology organisation delivering mission-critical infrastructure and secure digital services across the public sector. The team is expanding and looking for Senior Linux System Administrators to join a high-performing environment working on nationally significant projects.

You’ll be part of a skilled technical team responsible for maintaining and improving secure Linux environments, ensuring stability, performance, and compliance. The role offers hybrid working and exposure to some of the most advanced secure computing environments in the UK.