Windows Engineer

Salary: £36,000 - 60,000 per year

Requirements

• Experience administering Windows Server and Active Directory environments.
• Strong understanding of networking fundamentals, including DNS, DHCP, and TCP/IP.
• Experience supporting enterprise infrastructure in secure environments.
• Knowledge of PKI concepts, including Certificate Authorities, CRLs, OCSP, and key management.
• Experience with Azure, Azure AD, Microsoft Intune, or similar cloud technologies.
• PowerShell scripting experience for automation and operational tasks.
• Familiarity with Microsoft MMC, Event Viewer, and monitoring or SIEM tools.
• Understanding of backup, recovery, and disaster recovery processes.
• Experience working within ITIL-based service management environments.
• Knowledge of security frameworks and standards such as NIST and GDPR.
• Strong troubleshooting, documentation, and communication skills.
• DV clearance or eligibility and willingness to undergo the clearance process.
• CompTIA Security or an equivalent security certification is desirable.
• Experience working within highly regulated or government environments is desirable.
• Exposure to enterprise PKI platforms and cryptographic services is desirable.

Responsibilities

• Provide 2nd and 3rd line support across infrastructure and security platforms.
• Manage incidents, service requests, problems, and change activities.
• Administer Windows Server and Active Directory environments.
• Support Azure AD administration and Single Sign-On integrations.
• Configure and maintain Microsoft Intune.
• Monitor Microsoft Defender and respond to security alerts.
• Perform system maintenance, patching, backups, and health checks.
• Support Public Key Infrastructure services, including Root, Subordinate, and Issuing Certificate Authorities.
• Troubleshoot certificate issuance, renewal, revocation, and validation issues.
• Manage certificate lifecycle activities, including renewals, rekeying, and inventory management.
• Monitor CA services, CRLs, OCSP responders, and associated PKI infrastructure.
• Assist with maintaining cryptographic inventories and security controls.
• Ensure adherence to security policies, standards, and best practices.
• Support audit and compliance activities.
• Review security events and operational logs.
• Maintain accurate technical documentation and operational procedures.
• Support role-based access controls and secure administration practices.

Technologies

• Active Directory
• Azure
• Cloud
• Support
• ITIL
• Microsoft Intune
• PowerShell
• Security
• TCP/IP
• Windows
• DevOps

We are looking for an Infrastructure Engineer to support and maintain secure enterprise infrastructure and Public Key Infrastructure services within a highly secure environment. This is a full-time onsite role based in Corsham, with a competitive salary and a strong focus on security, service delivery, and operational excellence. We work across Windows Server, Active Directory, Azure, Intune, and PKI platforms, supporting critical systems and maintaining high standards of availability, compliance, and secure administration. We are seeking a proactive, analytical problem solver who is comfortable working independently and as part of a wider technical team, with excellent communication and stakeholder engagement skills.