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# Network Design Engineer (Arista/F5/Fortinet)

- **Company:** Hays plc
- **Location:** London, UK
- **Salary:** £130,000.0 - £169,000.0
- **Contract:** Temporary contract
- **Skills:** Complex Networks, Multicasting, Network Planning and Design, Load Balancing, Fortinet, Routing & Switching
- **Published:** October 22, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5935865678

## About the Role

* 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

## Description

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.