Infrastructure Engineer DV Clearence

Gazelle Global; Corsham; On-site; GBP 40,000 - 60,000; Full time

Job summary

Gazelle Global is seeking an Infrastructure/Windows Engineer located in Corsham, UK, to maintain secure enterprise infrastructure, including critical systems across various platforms. The role involves incident resolution, service delivery, and security assurance.

The ideal candidate will have expertise in Windows Server, Active Directory, Azure, and PKI, with strong troubleshooting and documentation skills. DV Clearance is required for this position, which operates in a highly regulated environment.

Qualifications

• Experience administering Windows Server and Active Directory.
• Strong understanding of networking fundamentals.
• Experience in secure environments with enterprise infrastructure.
• Knowledge of PKI concepts and certificate management.
• PowerShell scripting for automation.

Responsibilities

• Provide support across infrastructure and security platforms.
• Manage incidents, service requests, and changes.
• Administer Windows Server and Active Directory.
• Support Azure AD and Single Sign-On integrations.
• Monitor security alerts and perform system maintenance.

Skills

Windows Server administration

Active Directory management

Networking fundamentals (DNS, DHCP, TCP/IP)

PowerShell scripting

Azure services support

PKI knowledge

Incident management

Documentation skills

ITIL service management

Security compliance knowledge

Education

CompTIA Security+ or equivalent certification

Tools

Microsoft Intune

Monitoring or SIEM tools

Job description

Security Clearance: DV Cleared or Eligible

Overview

We are looking for an infrastructure/Windows engineer to support and maintain secure enterprise infrastructure and Public Key Infrastructure (PKI) services within a highly secure environment.

This role combines infrastructure operations, security engineering, and identity management, supporting critical systems across Windows Server, Active Directory, Azure, Intune, and PKI platforms. You will be responsible for incident resolution, service delivery, platform maintenance, and ensuring the ongoing security and availability of key services.

Key Responsibilities

Infrastructure Support & Operations

• 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 (SSO) integrations.
• Configure and maintain Microsoft Intune.
• Monitor Microsoft Defender and respond to security alerts.
• Perform system maintenance, patching, backups, and health checks.

PKI & Identity Management

• 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.

Security & Compliance

• 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.

Skills & Experience

• 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.
• CompTIA Security+ or equivalent security certification.
• Experience working within highly regulated or government environments.
• Exposure to enterprise PKI platforms and cryptographic services.

What We're Looking For

• A proactive and analytical problem solver.
• Strong attention to detail and commitment to security best practices.
• Ability to work independently and as part of a wider technical team.
• Comfortable operating within structured and highly secure environments.
• Excellent communication and stakeholder engagement skills.

Security Clearance: DV Clearance Required