Lead Low-Latency Network Architect - London Hybrid

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

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