Network Security Engineer

Company: Arcus Search
Apply for the Network Security Engineer
Location: London
Job Description:

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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Posted: October 12th, 2026