Infrastructure Engineer SC cleared (Microsoft)

Senior Microsoft Infrastructure Engineer (SC or DV Cleared) - Outside IR35

Hybrid: 3 Days Onsite, in Bristol
Rate: Up to £480 per day Outside IR35
Clearance: Active SC or DV Clearance Required

Duration: initial 6-12 month contract

Overview

We're seeking an experienced Senior Microsoft Infrastructure Engineer to join a major government transformation programme delivering secure enterprise services within highly classified environments. You'll play a key role designing, deploying, and supporting core Microsoft platforms including Active Directory, Exchange, SharePoint, Windows Server, RDS, and End User Computing services across secure and air-gapped networks.

Responsibilities

• Deploy, administer, and harden Microsoft enterprise platforms including Active Directory, Exchange Server SE, and SharePoint Server SE.
• Design and support secure Windows desktop, server, and virtual desktop solutions.
• Build and maintain Remote Desktop Services (RDS) environments.
• Develop and manage Group Policy, RBAC controls, security baselines, and platform hardening standards.
• Create and maintain Windows gold images and endpoint configurations.
• Operate and support business-critical services within secure, disconnected, and air-gapped environments.
• Troubleshoot complex infrastructure, identity, and endpoint issues.
• Collaborate with architecture, security, and engineering teams to deliver secure enterprise solutions.
• Produce High-Level Designs (HLDs), Low-Level Designs (LLDs), implementation plans, operational procedures, and support documentation.
• Support governance activities and Technical Design Authority (TDA) reviews.

Essential Skills & Experience

• Strong experience administering Microsoft enterprise technologies in large-scale environments.
• Expertise across:
• Active Directory Domain Services (AD DS)
• Windows Server
• Exchange Server
• SharePoint Server
• Group Policy (GPO)
• Remote Desktop Services (RDS)
• Identity & Access Management
• Experience implementing security baselines, platform hardening, and privileged access controls.
• Proven experience working within secure, regulated, or classified environments.
• Strong troubleshooting, technical documentation, and stakeholder engagement skills.

Technical Environment

Microsoft: Active Directory, Exchange Server SE, SharePoint Server SE, Windows Server, Windows 10/11, Group Policy, RDS

Security: STIGs, Security Baselines, RBAC, Identity Management, Platform Hardening

Infrastructure: Virtualisation, Secure Networks, Air-Gapped Environments, Enterprise Collaboration Platforms

Disclaimer
Notwithstanding any guidelines given to level of experience sought, we will consider candidates from outside this range if they can demonstrate the necessary competencies.
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