Infrastructure Support Specialist - on-site

Job Description:

Infrastructure Support Specialist – Job Specification

JOB TITLE: Infrastructure Support Specialist

LOCATION: Client Site – Onsite 5 days per week (occasional WFH), Primary location:
Aldermaston

SECURITY CLEARANCE: DV or willing to undergo vetting

ROLE OVERVIEW:

The Infrastructure Support Specialist plays a critical role within a high‑performance, fast‑paced Enterprise IT environment that supports a major public‑sector client. The position is responsible for delivering advanced 3rd and 4th line support across a wide range of technologies including Windows Server, Enterprise storage platforms, Hyper‑V, VMware, networking, and workstation environments. The role demands a deep technical understanding of On‑Premise data centre operations, as well as the ability to manage complex infrastructure estates with a focus on stability, resilience, and security.

You will be a key member of the On‑Prem Infrastructure Team, providing expert troubleshooting, solution implementation, and performance optimisation across server, storage, and virtualisation layers. Daily duties include performance monitoring, patch management, capacity planning, image deployment, system builds, BAU operational support, and proactive identification of risks and service improvements. Alongside BAU tasks, you will work extensively on a wide variety of projects covering infrastructure upgrades, platform enhancements, obsolescence remediation, data centre improvements, Hyper‑V cluster lifecycle activities, and related transformation initiatives.

The role requires an individual who can confidently operate in controlled data centre environments, managing configuration changes, cabling, hardware replacements, and environmental troubleshooting to ensure maximum service uptime. You will collaborate closely with Networking, Storage, Security, Desktop, and Application teams—requiring strong communication skills, the ability to explain technical concepts clearly, and the professionalism to work with internal stakeholders and external suppliers alike.

Candidates should demonstrate the ability to manage multiple work streams concurrently, respond rapidly to critical incidents, and apply strong analytical skills to diagnose complex infrastructure issues across interconnected systems. The position also demands a proactive mindset—anticipating potential failures, contributing to root cause analysis, and driving improvements to prevent recurring issues. Your ability to document infrastructure designs, create operational guides, and support rigorous ITSM practices (Incident, Problem, and Change Management) will be essential to the success of this role.

This is a strategically important position within the wider Enterprise Server Management function, ensuring continuity of critical services and supporting the ongoing evolution of the client’s IT capabilities. The successful candidate will be enthusiastic, resilient, comfortable working autonomously or as part of a team, and committed to continuous professional development within a rapidly evolving technological landscape.

We are looking for a highly motivated, customer-focused and enthusiastic individual to join the On‑Prem Infrastructure team. Responsibilities include delivering excellent 3rd/4th line support across Server, Storage, Networking, and Desktop environments, and managing complex enterprise infrastructure. Duties include Hyper‑V administration, troubleshooting, BAU support, project delivery, and collaboration across support teams.

KEY RESPONSIBILITIES:

• Manage and support Windows Server, Storage, Hyper‑V, Clustering, HCI platforms, backups, and monitoring systems.
• Perform performance monitoring, patching, image deployment, and system optimisation across infrastructure services.
• Troubleshoot issues across servers, storage, virtual machines, authentication paths, and workstations.
• Support enterprise networking across Extreme, Cisco, Dell, and HPE switching, including configuration and fault resolution.
• Assist with Juniper and Palo Alto firewall environments and resolve network connectivity issues.
• Apply core networking principles including VLANs, routing basics, STP, ARP, link aggregation,…