HPC Network Engineer

Location: London (Hybrid)

Salary: Up to $500,000

We're partnering with a global leader in high-frequency trading to hire an experienced Senior Network Engineer to design, build, and scale the next generation of high-performance network infrastructure powering mission-critical trading environments.

You'll play a key role in shaping network architecture, delivering large-scale data centre solutions, and working alongside world-class engineers to build infrastructure that operates at the cutting edge of technology and finance.

What you'll be doing:

• Design, deploy, and optimise large-scale data centre and HPC network environments.
• Build and support high-performance, low-latency infrastructure across global locations.
• Drive improvements around network scalability, performance, reliability, and capacity planning.
• Automate network operations through scripting and tooling improvements.
• Troubleshoot complex Layer 2/Layer 3 networking issues in highly distributed environments.
• Develop technical documentation and contribute to engineering standards.
• Mentor and support junior engineers while influencing future network strategy.

What we're looking for:

• 10+ years' experience designing and supporting enterprise-scale or data centre networks.
• Strong expertise across BGP, OSPF, VXLAN, spine-leaf architectures, and multicast.
• Experience with high-performance switching platforms such as Arista, Cisco, NVIDIA/Cumulus, or SONiC.
• Strong understanding of network architecture, capacity planning, and large-scale infrastructure design.
• Exposure to network automation using Python, Ansible, or similar technologies.

Why apply?

Work on some of the most advanced low-latency networking challenges in the world.

Join a highly technical engineering team at the forefront of high-frequency trading technology.

Have direct influence over architecture, automation, and next-generation infrastructure.

• Build systems where every microsecond matters.