Network Engineer

Job description

Senior Network Engineer (Low Latency/Co-Location) - 6 Month Contract - Inside IR35 - London Office

Contract Type: 6-Month Contract (Inside IR35)

Rate: £600 per day (can be negotiable)

Location: London (Soho)

Role Overview

Working closely with the Low Latency Co-Location Team Lead, the Senior Network Engineer will be responsible for the design, deployment, and support of high-performance network infrastructure within client data centre and exchange co-location environments.

The role focuses on delivering low-latency routing and switching solutions across multiple exchanges and global infrastructure environments. You will operate within a complex, multi-vendor network environment and play a key role in implementing scalable, resilient connectivity solutions while adapting to evolving technology and procurement challenges.

Key Responsibilities:

• Design, build, and maintain high-performance, low-latency network infrastructure within exchange and co-location environments.
• Implement routing and switching solutions across multi-vendor platforms, particularly Cisco and Arista.
• Support and evolve global WAN connectivity and cloud networking solutions.
• Configure and troubleshoot multicast network environments used for market data distribution.
• Deploy and support low-latency timing infrastructure, including GPS, PTP, NTP, and PPS systems.
• Install and maintain infrastructure within co-location facilities including rack-and-stack, cross-connects, and vendor coordination.
• Implement and operate packet capture, monitoring, and network analysis tools to troubleshoot performance and latency issues.

What You Will Ideally Bring:

• Proven experience as a network engineer in complex, multi-vendor environments.
• Hands-on experience working in data centre or co-location environments.
• Experience supporting low-latency or performance-sensitive network infrastructure.
• Previous exposure to exchange or financial trading connectivity environments is advantageous.
• Strong hands-on experience with routing and switching technologies.
• Strong operational experience with Cisco and Arista networking platforms.
• Solid understanding of core networking protocols and concepts including: BGP, OSPF, VLANs, Spanning Tree (STP), QoS, Layer 2 and Layer 3 troubleshooting
• Experience configuring and supporting multicast networking.
• Familiarity with Fortinet Firewalls.
• Experience implementing network timing solutions (GPS, PTP, NTP, PPS).

Extra information

Status

Open

Education Level

Secondary School

Location

London Area

Type of Contract

Full-time jobs

Published at

19-05-2026

Profession type

ICT

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English