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Network Security Engineer

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Onsite

Network Security Engineer

Arcus Search

Network Security Engineer

13 days ago

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Important information


Contract type:

Freelance / Contract

Location:

London, UK

Work mode:

Onsite

Published on:

7 October 2026

What they need


Network Security Engineer opportunity - 6 month Contract - Quantitative Technology - London

  • Looking for an experienced Network Security Engineer with a strong background in designing and operating high-performance, resilient network security infrastructure
  • You'll work across a global environment supporting highly technical research and technology operations, with significant ownership across security design, implementation and strategic initiatives
  • The focus is on enterprise network security, working closely with Security Architecture and wider infrastructure teams to deliver secure, scalable and reliable environments
  • You'll bring strong experience across enterprise firewalls, particularly Fortinet and Palo Alto, alongside web proxies, traffic inspection and F5 technologies
  • A deep understanding of packet inspection, TCP/IP, routing, switching, DNS and modern network security principles will be important
  • Experience with security frameworks such as NIST or CIS, automation/scripting and Privileged Access Management will be highly relevant

This is a technically demanding Network Security opportunity within a high-performance quantitative environment, with genuine scope to influence security architecture, infrastructure and the wider network security roadmap.

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