Infrastructure Engineer

Big Red Recruitment; Tewkesbury; On-site; GBP 45,000 - 65,000; Full time

Job summary

Big Red Recruitment is seeking an Infrastructure Engineer to maintain and enhance internal infrastructure in a highly secure defence environment. You will manage Windows Server 2019/2022, Microsoft 365, and virtualization (Hyper-V, VMware, Proxmox) while reinforcing security across platforms.

The role involves firewall support (Cisco, Palo Alto), patching, backup/disaster recovery, ISO compliance and on-going project work.

Qualifications

• Experience with Active Directory, DHCP, DNS, and Group Policy.
• Firewall configuration experience.
• Solid networking fundamentals: routing, switching, NAT, VPN.
• Exposure to Linux.

Responsibilities

• Maintain and improve internal infrastructure across a Windows-based environment.
• Support patch management and vulnerability remediation.
• Assist with backup and disaster recovery.
• Participate in project work, including VM provisioning and firewall configuration.
• Produce infrastructure documentation and ensure ISO compliance.

Skills

Windows Server

Microsoft 365

Hyper‑V

Firewall configuration

Active Directory

DHCP & DNS

Group Policy

Networking fundamentals

Linux exposure

Tools

VMware

Proxmox

Cisco

Palo Alto

Job description

Looking for an Infrastructure Engineer role where you can get involved in exciting projects and make a genuine impact to a highly secure environment?

You’ll join a technology business operating in the defence sector, delivering secure systems across multiple platforms - with security, resilience and compliance being central to everything they do.

You’ll be responsible for maintaining and improving internal infrastructure across a predominantly Windows-based environment, with a mix of virtualisation and networking responsibilities like:

• Windows Server 2019/2022 administration
• Microsoft 365 management
• Hyper‑V, VMware and Proxmox virtualisation
• Cisco and Palo Alto firewall support
• Patch management and vulnerability remediation
• Backup and disaster recovery
• Infrastructure documentation and ISO compliance

Alongside standard BAU responsibilities, you'll also get involved in project work, including spinning up VMs, firewall configuration, and improving internal platform security.

Technical experience you’ll need:

• Active Directory, DHCP, DNS, Group Policy
• Firewall configuration experience
• Solid networking fundamentals (routing, switching, NAT, VPN)
• Exposure to Linux

Location: Tewkesbury - due to the nature of the industry and security of the environment, the requirement is 5 days a week on site.

Security clearance (SC) is required and thorough background checks are done after offer stage. You must be a UK national and eligible to obtain clearance.

We are an equal opportunity recruitment company. This means we welcome applications from all suitably qualified people regardless of race, sex, disability, religion, sexual orientation or age.

We are particularly invested in Neurodiversity inclusion and offer reasonable adjustments in the interview process. Reasonable adjustments are changes that we can make in the interview process if your disability puts you at a disadvantage compared with others who are not disabled. If you would benefit from a reasonable adjustment in your interview process, please call or email one of our recruiters.