Network Design Engineer (Arista/F5/Fortinet)


Company:	Hays Specialist Recruitment
Salary:	£500 to £650 a day
Hours:	Full-time
Location:	London, EC2V 6DN
Job type:	Contract
Posting date:	20 Oct 2026
Closing date:	3 Nov 2026

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Summary

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

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