Senior Support Engineer

Salary: £60,000 - 65,000 per year

Requirements:

• We require strong hands-on experience with Microsoft infrastructure, including Windows Server, Active Directory, Microsoft 365, Azure, Exchange, Intune, and virtualisation platforms.
• We require solid networking knowledge covering firewalls, VLANs, switching, routing, VPNs, and wireless technologies.
• We require at least 5 years of IT support experience.
• We require a Microsoft Azure accreditation.
• We require the right to work in the UK full time.
• We require the ability to work in person at our Aylesbury location.
• A bachelors degree is preferred.
• Willingness to travel up to 25% is preferred.

Responsibilities:

• We act as the primary escalation point for complex technical issues from 1st and 2nd line support teams.
• We diagnose and resolve advanced infrastructure, server, network, and cloud-related issues.
• We take ownership of incidents, problems, and service requests through to resolution.
• We perform root cause analysis on recurring technical issues and implement permanent fixes.
• We ensure issues are resolved within agreed SLAs and communicate effectively with stakeholders throughout.
• We administer and support Windows Server environments.
• We manage and troubleshoot Active Directory, Group Policy, DNS, and DHCP.
• We support and maintain Microsoft 365 services including Exchange Online, SharePoint, Teams, OneDrive, and Entra ID.
• We manage Azure infrastructure and services where applicable.
• We support endpoint management solutions such as Microsoft Intune and Autopilot.
• We assist with migrations, upgrades, patching, and system improvements across Microsoft platforms.
• We maintain and support backup, disaster recovery, and business continuity solutions.
• We troubleshoot and support LAN, WAN, VPN, and wireless environments.
• We configure and maintain switches, routers, firewalls, and access points.
• We diagnose issues relating to TCP/IP, DNS, DHCP, VLANs, NAT, routing, and network security.
• We support site-to-site and remote access VPN configurations.
• We assist with network design, performance analysis, and ongoing optimisation.
• We work with third-party ISPs and providers to resolve connectivity issues.
• We support virtualised environments such as VMware and/or Hyper-V.
• We monitor server, storage, and network performance and recommend improvements.
• We manage patching, updates, and security hardening across systems.
• We support server builds, hardware replacements, and infrastructure refresh projects.
• We maintain technical documentation, diagrams, and support procedures.
• We participate in infrastructure projects, deployments, rollouts, and migrations.
• We provide technical input into solution design and implementation plans.
• We support onboarding of new clients, systems, and technologies where required.

Technologies:

• Active Directory
• Azure
• Cloud
• Hardware
• Hyper-V
• Support
• LAN
• Microsoft 365
• Microsoft Intune
• NAT
• Network
• Security
• SharePoint
• TCP/IP
• VPN
• VMware
• Windows
• Office 365

More:

We are seeking an experienced and highly capable Third Line IT Support Engineer to join our technical team in Aylesbury (HP20 1TW). The role is based in person and offers a salary of £60,000 to £65,000 per year. We provide benefits including casual dress, company pension, and on-site parking. This is a hands-on technical role within a customer-focused team, supporting advanced Microsoft infrastructure, networking, virtualisation, and infrastructure projects.

last updated 38 week of 2026