Infrastructure Engineer - DV Cleared

  • CBSbutler Holdings Limited trading as CBSbutler
  • 05/02/2026
Full time Information Technology Telecommunications

Job Description

Senior DV Cleared Infrastructure Engineer (Wintel)

Location: London (Full-time, 100% onsite)
Salary: 75,000 - 81,000 + Bonus
Security Clearance: Active DV clearance required



Overview

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



Essential Skills & Experience

  • 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

  • Solid general infrastructure troubleshooting skills

  • Experience working in secure, enterprise or government environments

  • Comfortable working full time onsite in London



Desirable Skills

  • PowerShell scripting

  • Backup and recovery solutions

  • Monitoring tools (e.g. SCOM or similar)

  • Exposure to security-focused or air-gapped environments



What's on Offer

  • Competitive salary 75k - 81k

  • Annual bonus

  • Opportunity to work on highly sensitive, mission-critical systems

  • Stable, long-term role in a secure environment