3rd Line Infrastructure Engineer

3rd Line Infrastructure Engineer – SC Cleared

Location: Wiltshire (full-time, onsite)

Clearance: SC clearance required (or willingness to obtain)

Package: Up to £60,000 + benefits

We’re looking for two experienced 3rd Line Infrastructure Engineers to join a dedicated support team in West Wiltshire. You’ll be responsible for managing incidents, problem resolution, and change requests across a secure, complex IT estate. This role involves a mix of hands-on technical work and incident ownership, ensuring SLAs are met and first-time fixes are maximised.

Key Responsibilities

• Provide 3rd line support for infrastructure incidents, service requests, and changes.
• Troubleshoot and resolve issues across hybrid server environments.
• Support secure key management systems (HSMs) including deployment, configuration, and maintenance.
• Contribute to incident and problem analysis, including root cause identification.
• Monitor and manage call queues, escalating where necessary.
• Work closely with other technical teams and adhere to security policies.
• Maintain accurate records in ITSM tools and contribute to SLA reporting.

Skills & Experience

Essential

• 5+ years supporting large-scale hybrid environments.
• Strong knowledge of Windows Server, Active Directory, Entra ID, VMware/Hyper-V.
• Hands-on experience with Thales Luna HSMs and PEDs (deployment, configuration, troubleshooting).
• Familiarity with ITIL processes (Incident, Request, Problem, Change).
• Confident communicator with excellent problem-solving skills.
• PowerShell scripting for automation and reporting.
• Current SC clearance (or eligibility to obtain).

Desirable

• Experience in identity services (Authentication, Federation, Conditional Access).
• DNS/DHCP and networking services support.
• Microsoft Azure services and modern device management (Intune, Workspace One).
• Relevant certifications (e.g. AZ-800/801, SC-300).
• Exposure to converged infrastructure and virtualisation platforms.