Low Latency Network Engineer

Hamilton Barnes ?; Greater London; Hybrid; GBP 450,000 - 550,000; Full time

Job summary

Hamilton Barnes is partnering with a leading high-frequency trading firm in London to hire a Senior Network Engineer who will design, build, and support the next generation of low-latency network infrastructure powering global trading operations. You'll work with a world-class engineering team to deliver scalable, high-performance networks across multiple international locations.

The role emphasizes automation, performance, and collaboration with infrastructure engineers in a fast-paced

Qualifications

• Significant experience designing and supporting large-scale network environments.
• Strong knowledge of BGP, OSPF, multicast, TCP/IP and modern data centre networking.
• Experience with Arista, Cisco, Juniper or similar platforms.
• Background in network architecture, capacity planning and infrastructure design.
• Strong troubleshooting using Wireshark or tcpdump.
• Experience with Linux networking and automation using Python and Ansible.

Responsibilities

• Design, deploy and optimise large-scale data centre and enterprise networks.
• Improve network performance, scalability and resilience.
• Troubleshoot complex Layer 2/Layer 3 networking issues.
• Collaborate with infrastructure teams supporting performance-critical environments.
• Drive automation and continuous improvement across the network estate.

Skills

BGP

OSPF

multicast

TCP/IP

data centre networking

network architecture

capacity planning

troubleshooting

Linux networking

Python

Ansible

Wireshark

tcpdump

Tools

Arista

Cisco

Juniper

Job description

Title: Lead Low Latency Network Engineer

Location: London (Hybrid)

Salary: Up to £500,000 TC (Flexible on experience)

We're partnering with a leading high-frequency trading firm to hire a Senior Network Engineer to design, build, and support the next generation of low-latency network infrastructure powering global trading operations.

Working alongside a world-class engineering team, you'll play a key role in delivering scalable, high-performance networks that underpin mission-critical systems across multiple international locations.

What you'll be doing

Design, deploy and optimise large-scale data centre and enterprise networks.

Improve network performance, scalability and resilience.

Troubleshoot complex Layer 2/Layer 3 networking issues.

Collaborate with infrastructure teams supporting performance-critical environments.

Drive automation and continuous improvement across the network estate.

What we're looking for

Significant experience designing and supporting large-scale network environments.

Strong knowledge of BGP, OSPF, multicast, TCP/IP and modern data centre networking.

Experience with Arista, Cisco, Juniper or similar enterprise networking platforms.

Background in network architecture, capacity planning and infrastructure design.

Strong troubleshooting skills using tools such as Wireshark or tcpdump.

Experience with Linux networking and automation using Python, Ansible or similar.

Why apply?

Join a leading high-frequency trading firm at the forefront of technology and finance.

Work on some of the industry's most advanced low-latency networking challenges.

Influence the design and evolution of a globally distributed, high-performance network.

Collaborate with some of the brightest infrastructure engineers in the industry.

Work for an organisation where collaboration is genuinely encouraged