Job Summary
We're looking for a hands-on Infrastructure Security Engineer to join a specialist technology company operating in the national security and communications intelligence sector. Their platforms support government, law enforcement and telecoms clients around the world, and the infrastructure you'll be maintaining sits at the heart of that mission.
This is a broad, hands-on infrastructure role covering installation, maintenance, problem management and documentation across a virtualised server estate, with genuine scope to expand into Linux, Kubernetes and cloud as the environment evolves.
You'll be based onsite three days a week in Hampshire, with occasional travel to customer sites in the UK and internationally, so a full UK driving licence is required.
Duties
- Field installation and support of infrastructure hosting the company's core products, often within secure environments
- Hardening and securing client PCs and servers in line with recognised government and industry security standards
- Domain Controller administration, including FSMO roles, high availability and replication monitoring
- Running patch management schedules across Windows Server and client estates
- Deploying and maintaining antivirus and SIEM tooling
- Supporting customer hardware/software upgrades and new infrastructure rollouts
- Delivering training and knowledge transfer, one-to-one or in small groups
- Providing remote support and joining customer troubleshooting calls
- Taking part in an on-call rotation to support 24x7 customer coverage
Experience
- Commercial experience in an infrastructure or systems engineering role
- PowerShell scripting for install automation
- Hands-on experience with Microsoft Exchange messaging systems
- Proxmox environment management (VM and template creation)
- VMware vSphere administration (VMs, virtual switches)
- Windows Server, Active Directory, DNS, DHCP, OUs and Group Policy
- WSUS experience, ideally including airgapped environments
- Experience managing secure removable-media processes
- Server hardening and security baselining (CIS-aligned)
- Solid networking fundamentals — LAN/WAN, routers, switches, firewalls
- Strong communication and customer-facing skills
- Willingness to travel as required
- Willingness to undergo security clearance
Nice to have:
- Linux system and service administration
- Network Attached Storage experience (iSCSI, NFS) integrated with virtualisation
- SIEM platform experience
- Confluence administration
- Regulatory compliance awareness
- Kubernetes / containerised deployment experience
Pay: £60,000.00-£75,000.00 per year
Work Location: Hybrid remote in Farnborough GU14
