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Network Design Engineer (Arista/F5/Fortinet)

Hays Specialist Recruitment Limited

London · Posted 20 Oct 2026 · 5 applicants

£500.00 - £650.00 per day
Contract
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My client is a leading Financial Markets organisation seeking an experienced Network Design Engineer to join a major FX Trading Platform programme.

This role will focus on the design, implementation and modernisation of complex network infrastructure supporting a large-scale trading environment. You will work closely with engineering, architecture and business stakeholders to deliver resilient, secure and low-latency network solutions.

Rate: Up to £650pd Inside IR35 via Umbrella

Duration: 12-Month Contract

Location: London, Hybrid (3 days on-site)

Key Requirements

  • Strong Network Design and Implementation experience
  • Multicast networking expertise
  • Strong Arista networking experience, ideally including spine-leaf fabric architecture
  • F5 Load Balancer experience
  • Fortinet, Palo Alto and/or Check Point experience, ideally including firewall migration or replacement programmes
  • Strong Routing & Switching knowledge
  • Experience within Financial Services, Trading or Capital Markets environments
  • Experience producing HLDs, LLDs and technical documentation
  • Strong stakeholder engagement and communication skills

What to do next

If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV.
If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career.

Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C's, Privacy Policy and Disclaimers which can be found at hays.co.uk

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