System Administrator
Up to £55,000 | Permanent | Farnborough (onsite 3–5 days/wk, hybrid flexibility)
National Security & Defence | SC Cleared (DV eligible)
Keep critical systems reliable, secure, and up to date across multiple environments. You’ll own monitoring, patching, and hardening workflows that underpin a high-profile programme.
Core Focus
* Proactively monitor and triage alerts (Elastic)
* Maintain resilient network connectivity across the estate
* Run vulnerability assessments (Nessus) and action SOC outputs
* Implement firewall upgrades and configuration changes
* Manage WSUS for controlled Windows patch deployments
* Maintain Linux repositories and oversee patching cycles (pre-prod → prod)
Essentials
* Proven System Administration in secure/enterprise environments
* Hands-on with Linux and Windows Server
* Patching at scale (WSUS, Linux repos) and firewall management
* Understanding of network protocols and core cyber security principles
* Familiar with Elastic monitoring, Nessus, and SOC workflows
Desirables
* Certifications: CompTIA Security+, Microsoft Certified / Azure Administrator, or similar
Clearance & Working Pattern
* Active UK SC required; willing and eligible for UK DV
* Farnborough based; hybrid possible, onsite 3–5 days/week as needed
If you take pride in clean operational execution and secure-by-default systems, this is a solid fit.