Senior HPC Network Engineer - Low-Latency DC Mastery

Hamilton Barnes ?; New York (NY); Hybrid; USD 450,000 - 550,000; Full time

Job summary

Hamilton Barnes partners with a global leader to hire a Senior Network Engineer to design, build, and scale high-performance network infrastructure powering mission-critical trading environments.

This hands-on role focuses on ultra-low latency, high-throughput networks, data centre scale, and automation via scripting. You’ll mentor engineers and shape architecture across global locations.

Qualifications

• 10+ years of experience designing and supporting enterprise-scale or data centre networks.
• Expertise in BGP, OSPF, VXLAN, spine-leaf architectures and multicast.
• Experience with high-performance switches and platforms (Arista, Cisco, NVIDIA/Cumulus, SONiC).
• Strong understanding of network architecture, capacity planning and large-scale design.
• Proficiency with packet analysis tools (Wireshark, tcpdump).
• Exposure to network automation using Python, Ansible, or similar tools.

Responsibilities

• Design, deploy, and optimise large-scale data centre and HPC networks.
• Build and support high-performance, low-latency infrastructure across global locations.
• Drive improvements in scalability, performance, reliability and capacity planning.
• Automate network operations through scripting and tooling improvements.
• Troubleshoot complex Layer 2/Layer 3 issues in 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 architectures

Multicast

Automation scripting

Network troubleshooting

Python

Ansible

Mentoring/leadership

Tools

Arista

Cisco

NVIDIA/Cumulus

SONiC

Wireshark

tcpdump

Job description

Hamilton Barnes partners with a global leader to hire a Senior Network Engineer to design, build, and scale high-performance network infrastructure powering mission-critical trading environments.

This hands-on role focuses on ultra-low latency, high-throughput networks, data centre scale, and automation via scripting. You’ll mentor engineers and shape architecture across global locations.