Senior 3rd Line Support Engineer

Maxwell Bond; City Of London; Hybrid; GBP 44,000 - 52,000; Full time

Job summary

A leading managed service provider in Central London is seeking a Senior 3rd Line Support Engineer. This role focuses on complex infrastructure and networking challenges. Ideal candidates will have 4–6 years of experience in a fast-paced environment, strong Windows Server and networking skills, and a passion for mentoring junior engineers. This position offers a hybrid working model and up to £52,000 salary.

Benefits

Funded social events

Referral bonuses

Recognition through awards

Qualifications

• 4–6+ years in MSP or fast-paced IT environment.
• Proven networking experience, familiarity with Cisco, Sophos, Fortinet.
• Excellent troubleshooting and communication skills.

Responsibilities

• Resolve complex 3rd-line issues across infrastructure and networking.
• Design and manage Windows Server and virtualization.
• Mentor junior engineers.

Skills

Windows Server

Active Directory

Group Policy

PowerShell

Networking experience

VLANs

VPNs

firewalls

Veeam Backup & Replication

Intune

Azure

AWS

Job description

Senior 3rd Line Support Engineer

(Infrastructure & Networking)

Central London | Up to £52k | Hybrid

Are you an experiencedThird Line Support Engineerlooking to take on more complex infrastructure and networking challenges?

We’re working with a leading Managed Service Provider (MSP) based in Central London, supporting hundreds of businesses across the creative and engineering sectors. This is your chance to take ownership of high-impact projects, shape infrastructure strategy, and act as the technical escalation point for a talented engineering team.

Key Responsibilities

• Escalate and resolve complex 3rd-line issues across infrastructure, networking, and cloud.
• Design, configure, and manage Windows Server and virtualization (Hyper‑V/VMware).
• Oversee networks: DNS, DHCP, VLANs, VPNs, routing, and firewalls.
• Implement and maintain enterprise backup and disaster recovery solutions.
• Lead projects: migrations, upgrades, and hybrid deployments.
• Manage Microsoft 365, Azure, and hybrid cloud services.
• Mentor junior engineers to build skills and expertise.

Requirements

• 4–6+ years in MSP or fast‑paced IT environment.
• Strong Windows Server, Active Directory, Group Policy, and PowerShell skills.
• Proven networking experience: VLANs, VPNs, routing, firewalls (Cisco, Sophos, Fortinet).
• Veeam Backup & Replication expertise; disaster recovery knowledge.
• Experience with Intune, MDT, Lucidlink, Egnyte, Azure, AWS.
• Excellent troubleshooting, communication, and client engagement skills.

What’s in It for You

• Salary:£52,000
• Hybrid working:2–3 days per week from home
• Career development:Tailored professional development with opportunities to progress into lead roles
• Collaborative culture:Work within a technically strong, close‑knit team that values expertise, innovation, and continuous improvement.
• Perks:Funded social events, referral bonuses, and ongoing recognition through quarterly awards.

If you’re a hands‑on IT Support and Infrastructure specialist with a passion for networking, problem‑solving, and delivering excellence in a high‑performance MSP environment — this role offers the scope and responsibility you’ve been looking for.