Overview

2nd / 3rd Line IT Support Engineer – Security ClearedLocation: Corsham – HybridSalary: £38,000 – £43,000 + Excellent Company Benefits + TAX FREE YEARLY BonusNexGen Associates are partnered with a leading IT Consultancy working within the Government and Defence sectors. They are seeking an experienced 2nd / 3rd Line IT Support Engineer to join their team. You will be working within a managed services environment, providing high-quality technical support across complex systems and classified networks. This role offers exposure to modern technologies and structured processes – an ideal opportunity for service leavers transitioning into a commercial setting. You must hold current SC Clearance (and be eligible for DV clearance) and be a sole British national due to the nature of the work.Responsibilities

Provide 2nd and 3rd line support for desktops, servers, applications, and networks.Troubleshoot and resolve escalated incidents across Windows, Linux and Microsoft technologies.Support the configuration, deployment, and maintenance of desktops, laptops, mobile devices, and servers.Administer Microsoft 365, Azure, and Active Directory/Entra ID environments.Perform routine monitoring, patching, and maintenance to ensure system stability and performance.Document solutions, produce technical knowledge base articles and contribute to process improvements.Collaborate with project teams on infrastructure builds, upgrades and migrations.Act as a technical escalation point for 1st line and service desk teams.Liaise with third-party vendors and solution providers when required.Support security and compliance requirements across government-classified systems.Requirements

Security Clearance: SC Cleared as a minimum (eligible/willing for DV). Sole UK national.3+ years’ experience in a 2nd/3rd line support, infrastructure, or systems engineering role.Strong knowledge of Windows Server and desktop environments.Good working knowledge of Linux operating systems.Microsoft 365 and Azure administration experience.Strong experience with Active Directory, Entra/AAD, DNS, DHCP, and Group Policy.Hands-on experience with networking fundamentals (TCP/IP, VLANs, firewalls).Proficiency with ITSM and RMM toolsets (ServiceNow, HaloITSM, ManageEngine, N-Able).Familiarity with system monitoring, patching, and backup solutions.Excellent problem-solving skills and ability to mentor junior staff.Strong communication skills, comfortable dealing with both technical and non-technical stakeholders.

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