HPC Network Engineer

Hamilton Barnes ?; New York (NY); Hybrid; GBP 340,000 - 416,000; Full time

Job summary

Hamilton Barnes is seeking an experienced Senior Network Engineer to design, build, and scale high-performance network infrastructure for ultra-low latency trading environments. Location: New Yok Hybrid with very flexible arrangements.

You will design and deploy large-scale data centre and HPC networks, build high-performance, low-latency systems across global locations, and drive capacity planning, reliability, and automation initiatives while mentoring junior engineers.

Qualifications

• 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.
• Experience using packet analysis tools such as Wireshark or tcpdump.
• Exposure to network automation using Python, Ansible, or similar technologies.

Responsibilities

• 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.

Skills

BGP

OSPF

VXLAN

Spine-leaf

Multicast

Arista

Cisco

NVIDIA/Cumulus

SONiC

Wireshark

tcpdump

Python

Ansible

Network Automation

Tools

Wireshark

tcpdump

Job description

Location: New Yok Hybrid (Very flexible)

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.

This is a hands-on opportunity to work on some of the most advanced networking challenges in the industry, supporting ultra-low latency, high-throughput environments where performance, resilience, and precision are critical.

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.

Experience using packet analysis tools such as Wireshark or tcpdump.

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.