# Network Security Consultant at La Fosse in London, United…

> Network Security Consultant at La Fosse in London, United Kingdom. Category: Operations Jobs. View full job details and apply now on Confidential Careers.

Network Security Consultant

# Network Security Consultant

La Fosse

## Job Description

Principal Network Security Consultant

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

- IR35 Status: Outside

- Day Rate: £600-£650pd

- 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/CNI setting.

- 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.

Posted August 26, 2026

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