System Administrator

The Talent Locker Ltd.; Farnborough; Hybrid; GBP 46,000 - 55,000; Full time

Job summary

A leading defence and technology firm in Farnborough is seeking a skilled System Administrator to ensure the reliability and security of their infrastructure. The ideal candidate will have experience in system administration, familiarity with cyber security protocols, and be willing to work on-site 3-5 days per week while holding current UK SC clearance. This role offers competitive compensation, with a salary of up to £55,000.

Qualifications

• Proven experience in system administration within a similar environment.
• Hands-on experience with patching tools and firewall management.
• Demonstrable working knowledge of network protocols and cyber security principles.

Responsibilities

• Monitor system performance and respond proactively to alerts.
• Ensure network connectivity and infrastructure reliability.
• Conduct regular vulnerability assessments using tools such as Nessus.
• Manage firewall upgrades and configuration updates.
• Oversee patching cycles across environments.

Skills

System administration

Network protocols

Cyber security principles

Elastic monitoring tools

Nessus scanning

Patching tools

Firewall management

Linux

Windows Server

Education

Relevant certifications (CompTIA Security, Microsoft certified, Azure administrator, or similar)

Job description

System Administrator

Farnborough

Permanent | up to £55,000

SC Cleared

Talent Locker are pleased to be partnering with a leading defence and technology organisation supporting MOD and Military customers, recruiting for a Systems Administrator.

As the System Administrator, you’ll play a key role in maintaining and supporting the technical infrastructure of a high-profile programme. You will ensure system reliability, maintain strong security protocols and manage regular patching and maintenance routines across multiple environments. This position requires a proactive approach, strong technical ability, and a commitment to operational excellence.

Key Responsibilities

• Monitor system performance and respond proactively to alerts through Elastic monitoring tools
• Ensure network connectivity and infrastructure supporting the programme remain reliable and fully operational
• Conduct regular vulnerability assessments using tools such as Nessus
• Review and act upon outputs from the SOC to maintain system integrity and compliance
• Implement firewall upgrades and configuration updates within the programme infrastructure
• Manage windows server update services (WSUS) for controlled patch deployment
• Maintain Linux repositories and oversee patching cycles across pre production and production environments

Relevant Experience

• Proven experience in system administration in a similar environment
• Familiarity with elastic monitoring, Nessus scanning and SOC workflows
• Hands on experience with patching tools and firewall management
• Proficient with both Linux and Windows Server
• Demonstrable working knowledge of network protocols and cyber security principles
• Relevant certifications such as CompTIA Security, Microsoft certified, azure administrator or similar

This position is based in Farnborough and although there will some flexibility to allow hybrid working, you should be willing to attend site 3-5 days per week as required.

It is an essential requirement to hold current UK SC clearance and to be willing and eligible for UK DV Clearance.

To find out more information or to apply, please get in touch with Emma on [e-mail]