Network Security Lead

La Fosse Associates; Greater London; On-site; GBP 129,000 - 138,000; Full time

Job summary

La Fosse Associates is seeking a Contract Network Security Lead for a Global Financial Services Organisation in London. You will oversee the refresh of network security architecture across a predominantly on-prem estate, providing senior technical direction.

The role focuses on WAF, F5, firewalls, VPNs, network segmentation, and legacy infrastructure, acting as a strategic consultant rather than hands-on engineering.

Qualifications

• Deep expertise in network security architecture and risk management.
• Experience with on-prem network environments in regulated industries.
• Ability to translate security architecture into practical, measurable improvements.

Responsibilities

• Lead the refresh of the network security architecture and roadmap across a predominantly on-prem environment.
• Provide senior technical direction across WAF, segmentation, firewall architecture and rule sets, VPN connectivity.
• Drive uplift of F5 environments with exposure to Palo Alto and Blue Coat considered desirable.
• Own the refresh of network security controls and track progress against security metrics.

Skills

WAF

F5

Firewalls

Network segmentation

VPNs

Tools

Palo Alto

Blue Coat

Job description

Network Security Lead

A Global Financial Services Organisation requires a Contract Network Security Lead with deep expertise across network security architecture, WAF, F5, firewalls, network segmentation, VPNs and legacy on-prem infrastructure.

• IR35 Status: Outside
• Day Rate: £700-£750pd
• Travel: 2 days a week in Central London Office
• Duration: Initial 6 months

Responsibilities:

• Lead the refresh of the organisation’s network security architecture and roadmap, providing senior technical direction across a complex, predominantly on-prem environment within a highly regulated banking environment.
• Provide deep network security expertise across WAF, network segmentation, firewall architecture and rule sets, VPN connectivity and legacy network infrastructure, acting as a senior consultant rather than a hands-on engineer.
• Drive the ongoing uplift of the F5 environment, with strong experience across F5 technologies essential; exposure to Palo Alto and Blue Coat is highly desirable.
• Own the refresh of network security controls, translating security architecture into practical improvements and driving measurable progress against security and risk metrics.

,