Network Security Lead

Randstad Technologies Recruitment; City Of London; Hybrid; GBP 90,000 - 120,000; Full time

Job summary

Randstad Technologies Recruitment in London seeks a Network Security Lead to own and advance our security operations landscape. The role requires leadership in incident response and oversight of enterprise network protection across global environments.

The successful candidate will bring 8+ years of hands-on experience with routing, switching, firewalls, and security platforms, plus a track record of delivering improvements in complex, high-pressure networks.

Qualifications

• 8+ years of experience managing complex enterprise networks.
• Technical leadership role in major incident response.

Responsibilities

• Lead network security operations for a global enterprise.
• Handle major incident response and remediation.

Skills

Routing & Switching

Security & Firewalls

Network Protocols

Wireless & SD-WAN

Automation (Bonus)

Tools

Cisco Nexus

Palo Alto

FortiGate

Cisco FTD

Cisco ISE

Aruba/Meraki

Job description

Role: Network Security Lead (Permanent)
Location: London, UK (Hybrid - 2 days on-site)Clearance Requirement: BPSS Eligible

We are hiring an L3 Subject Matter Expert to lead network security operations for a global enterprise. If you have 8+ years of experience managing complex enterprise networks and thrive in a technical leadership role handling major incident response, we want to hear from you.

Key Requirements:

• Routing & Switching: Mandatory deep expertise in Cisco Data Centre and Branch Routers/Switches (Nexus).
• Security & Firewalls: Strong hands-on experience with Palo Alto, FortiGate, Cisco FTD, and Cisco ISE (NAC).
• Network Protocols: Advanced knowledge of BGP, OSPF, VXLAN, EVPN, and IPsec VPNs.
• Wireless & SD-WAN: Experience supporting Cisco, Aruba, and Meraki environments.
• Automation (Bonus): Python or PowerShell scripting for operational efficiency.

No terminology in this advert is intended to discriminate against any of the protected characteristics that fall under the Equality Act 2010.