Network Support Engineer x

London | £40,000 - £50,000 | Field-Based | SC Clearable

Are you a hands-on Network Support Engineer who enjoys troubleshooting complex issues in real-world environments rather than sitting behind a desk all day?

We're working with a specialist technology services provider that supports critical infrastructure, smart buildings and operational technology environments across London. Due to continued growth, they're looking to hire two 2nd Line Network Support Engineers to join their technical team. This is a varied, field-based role supporting customer environments across commercial buildings, data centres and other business‑critical sites. You'll be responsible for diagnosing and resolving network issues, supporting infrastructure upgrades and ensuring customers receive a high level of technical support.

• Providing 2nd Line network support across multiple customer environments.
• Troubleshooting routing, switching and connectivity issues.
• Diagnosing faults across network infrastructure, firewalls and associated hardware.
• Supporting critical infrastructure and operational technology environments.
• Working closely with customers, internal engineers and third‑party vendors.
• Supporting planned maintenance and infrastructure changes.
• Maintaining technical documentation and support records.
• Taking ownership of incidents through to resolution.

• Experience in a Network Support Engineer, Network Analyst or Infrastructure Support role.
• Strong troubleshooting and fault‑finding skills.

Routing & Switching

• TCP/IP
• VLANs, DNS & DHCP
• Experience supporting physical network infrastructure.
• Strong communication and customer‑facing skills.
• Full UK driving licence preferred.
• Must be eligible for SC Clearance.
• Operational Technology (OT).
• Building Management Systems (BMS).
• Smart Buildings.
• Fortinet, Sonic Wall or Barracuda technologies.
• Critical infrastructure or highly regulated environments.

• Exposure to a wide range of technologies and environments.
• Opportunity to work within critical infrastructure and smart building networks.
• Diverse and varied technical challenges.
• Established and growing technology services business.
• Competitive salary of £40,000 - £50,000.