3rd Line IT Support Engineer

Salary: £76,000 - 90,000 per year

Requirements

• We are looking for an experienced 3rd Line IT Support Engineer or Senior Infrastructure Engineer.
• You should have strong hands-on experience with Windows Server, Active Directory, DNS, DHCP, GPOs and WDS.
• You should have experience with Hyper-V and VMware virtualisation.
• You should have experience with Microsoft Azure, including Azure AD, Virtual Machines and Storage.
• You should have experience with backup and disaster recovery solutions such as Veeam, Cove and Acronis.
• You should have strong networking knowledge, including VLANs, subnetting, TCP/IP, LAGs and VPNs.
• You should have experience with firewalls including Fortinet, Juniper, WatchGuard and/or Palo Alto.
• You should have experience with storage solutions such as Dell PowerVault and Synology.
• You should have experience with endpoint protection platforms including Microsoft Defender and Sophos.
• You should have experience delivering infrastructure projects, including server migrations, cloud deployments and network upgrades.
• You should be comfortable working directly with clients and acting as a technical escalation point within an MSP environment.

Responsibilities

• We provide 3rd line support and expert troubleshooting across server environments, virtualisation, networking, cloud and security.
• We act as a senior escalation point for complex technical issues.
• We manage and deliver infrastructure projects, including server migrations, virtualisation deployments, Azure solutions and network upgrades.
• We work directly with clients to understand technical requirements and provide appropriate solutions.
• We support and mentor junior engineers, sharing technical knowledge and best practice.
• We design and implement security solutions, including firewalls, endpoint protection and cloud security.
• We maintain accurate technical documentation covering system configurations, solutions and troubleshooting.
• We provide clients with technical recommendations and performance reports.

Technologies

• Active Directory
• Azure
• Cloud
• Hyper-V
• Support
• Network
• Security
• TCP/IP
• VMware
• Veeam
• Windows

More

We are a fast-paced Managed Service Provider supporting a wide range of businesses from our London base. This is a senior technical role focused on resolving complex infrastructure issues, supporting client environments and delivering high-quality IT solutions. We offer a salary up to 55,000, a 40-hour working week Monday to Friday between 9am and 6pm UK time, flexible hybrid working including work-from-home Fridays and additional remote working days, 22 days annual leave plus Bank Holidays increasing up to 25 days with tenure, quarterly and annual staff awards, funded social events, employee referral bonuses, and ongoing professional development and training opportunities.

last updated 36 week of 2026