Senior 3rd Line Engineer
3rd Line IT Support Engineer Central London Up to £55,000
We're looking for an experienced 3rd Line IT Support Engineer to take a leading role within a growing technical team. This position is ideal for someone with a strong background in infrastructure management, 3rd-line support, and project delivery.
You'll be responsible for managing complex client environments, implementing robust IT solutions, and providing technical leadership to junior engineers. This is a hands-on, senior-level role where you'll combine troubleshooting expertise with project ownership and client engagement.
Key Responsibilities
-  Provide advanced 3rd-line support across servers, networks, cloud services, and security. 
-  Design, deploy, and manage infrastructure projects including virtualisation, Azure, and server migrations. 
-  Act as a technical lead for escalations and guide engineers through complex issues. 
-  Collaborate directly with clients to deliver reliable and efficient IT solutions. 
-  Lead on security initiatives, firewalls, endpoint protection, and data compliance. 
-  Maintain detailed system documentation and performance reports. 
-  Mentor and support junior engineers to promote best practice and technical growth. 
-  Strong experience managing Windows Server, Active Directory, DNS, DHCP, and Group Policy. 
-  Expertise in virtualisation technologies (Hyper-V / VMware). 
-  Hands-on experience with Microsoft Azure (Azure AD, VMs, Storage). 
-  Skilled in backup and DR solutions (Veeam, Acronis, Cove). 
-  Solid understanding of networking, VLANs, VPNs, and firewalls (Fortinet, Juniper, WatchGuard, Palo Alto). 
-  Familiarity with storage platforms (Dell PowerVault, Synology) and endpoint protection (Microsoft Defender, Sophos). 
-  Proven experience delivering infrastructure projects from design to completion. 
- Competitive salary and benefits package
- Opportunity to lead major client infrastructure projects
- Exposure to cutting-edge technologies across multiple industries
- Supportive environment with career progression and training opportunities
If this role is role sounds of interest Apply Now! Alternatively email
- Company
- Allegiance Technology
- Location
- London, South East, England, United Kingdom
- Employment Type
- Full-Time
- Salary
- £45,000 - £55,000 per annum
- Posted
- Company
- Allegiance Technology
- Location
- London, South East, England, United Kingdom
- Employment Type
- Full-Time
- Salary
- £45,000 - £55,000 per annum
- Posted