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# Senior IT Infrastructure & Support Engineer

- **Company:** Blue Box IT
- **Location:** Millhouse Green, UK (Remote available)
- **Experience:** Expert
- **Salary:** £35,000.0 - £42,000.0
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Active Directory, Amazon Web Services, Microsoft Azure, Backup Devices, Cloud Computing, Dynamic Host Configuration Protocol, Domain Name System (DNS), Hyper-V, Virtual Private Networks (VPN), Network Security, Network Troubleshooting, Microsoft Office, Microsoft Software, Windows Servers, Routing, Windows PowerShell, Azure Active Directory, TCP/IP, Virtual Local Area Networks, Virtualization Technology, Wide Area Networks, Wi-Fi Technology, Firewalls (Computer Science), Microsoft InTune, Information Technology, Fortinet, Cisco, Windows Client, Vmware
- **Published:** October 23, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5937799685

## About the Role

* At least 5 years of relevant service desk support experience.
 * Practical experience across several areas such as Microsoft 365, Windows Server, Active Directory, Microsoft Entra ID, Group Policy, Intune, Azure, Windows 10/11, networking, firewalls, virtualisation, backup and disaster recovery.
 * Strong analytical, troubleshooting and problem-solving skills, with the ability to investigate complex issues independently and take ownership through to resolution.
 * Ability to prioritise effectively in a busy, multi-customer environment and remain calm during critical incidents.
 * Clear communication skills, including explaining technical issues to non-technical customers, and the ability to produce useful technical documentation.
 * A collaborative approach and willingness to share knowledge, keep learning and develop technically.
 * Ability to travel independently to our Penistone office at least three days per week.
 * Experience with Fortinet/FortiGate, AWS, Ubiquiti, Cisco or Aruba networking, VMware or Hyper-V, Acronis, Smoothwall, PowerShell, or previous MSP work would be advantageous.
 * Relevant Microsoft, Fortinet, AWS, CompTIA or other technical certifications are welcome but not required.

## Description

* Take ownership of complex 2nd Line and appropriate 3rd Line incidents through to resolution.
 * Act as a technical escalation point for the Service Desk, investigating and resolving complex issues.
 * Engage with Field Team engineers when on-site investigation or remediation is required.
 * Participate in a regular on-call rota, including Saturday-morning cover for escalated P1 incidents.
 * Troubleshoot Microsoft 365, Windows Server, Active Directory, Microsoft Entra ID, Azure and infrastructure issues.
 * Diagnose networking issues across LAN, WAN, Wi-Fi and VPN environments, including DNS, DHCP, TCP/IP, VLAN, routing and switching.
 * Support firewalls, network security, VMware and Hyper-V environments, Microsoft Intune, backups, endpoints and infrastructure alerts.
 * Take ownership during complex or business-critical incidents and lead troubleshooting and root-cause analysis.
 * Communicate directly with customers and provide clear technical updates.
 * Maintain accurate ticket notes, technical documentation and knowledge articles.
 * Provide technical guidance to 1st and 2nd Line engineers and help develop the Service Desks troubleshooting capability.
 * Identify recurring issues and contribute to continual service improvement.

Technologies:

 * AWS
 * Active Directory
 * Aruba
 * Azure
 * Cisco
 * FortiGate
 * Hyper-V
 * Support
 * LAN
 * Microsoft 365
 * Microsoft Intune
 * Network
 * PowerShell
 * Security
 * TCP/IP
 * VPN
 * VMware
 * Windows
 * Office 365
 * Cloud
 * Firewall