Infrastructure Engineer - DV Cleared
Posted 9 days 6 hours ago by CBSbutler Ltd.
Business Sector: IT
Job ref: BBBH153790
Post Date: February 05, 2026
Senior DV Cleared Infrastructure Engineer (Wintel)Location: London (Full-time, 100% onsite)
Salary: £75,000 - £81,000 + Bonus
Security Clearance: Active DV clearance required
We are looking for a Senior Infrastructure Engineer with active DV clearance to join a high-security environment in London. This is a hands-on role focused on Wintel and core infrastructure services, supporting and maintaining critical systems in a fully onsite setting.
You'll be working as part of an experienced infrastructure team, taking ownership of enterprise-scale environments and contributing to the stability, security, and improvement of key platforms.
Key Responsibilities- Design, build, support, and maintain Windows-based infrastructure
- Administer and support Active Directory, including GPOs, DNS, DHCP, and user/device management
- Manage and support VMware virtualised environments
- Troubleshoot and resolve complex infrastructure issues across servers and core services
- Apply security best practices within a highly regulated environment
- Participate in system upgrades, patching, and lifecycle management
- Produce and maintain technical documentation
- Work closely with other infrastructure, network, and security teams
- Active DV clearance (must be current)
- Strong experience in Wintel infrastructure engineering
- In-depth knowledge of:
- Windows Server (2016/2019/2022)
- Active Directory, Group Policy, DNS, DHCP
- VMware vSphere / ESXi
- Experience working in secure, enterprise or government environments
- Comfortable working full time onsite in London
- PowerShell scripting
- Backup and recovery solutions
- Monitoring tools (e.g. SCOM or similar)
- Exposure to security-focused or air-gapped environments
Annual bonus
Opportunity to work on highly sensitive, mission-critical systems
Stable, long-term role in a secure environment