Senior AI Network Architect for Large-Scale GPU Clusters

Hamilton Barnes Associates Limited; United States; On-site; USD 220,000 - 350,000; Full time

Benefits offered by this job

Annual bonus

Equity opportunities

Flexible working arrangements

Career progression

Job summary

Hamilton Barnes Associates Limited is seeking a Senior AI Network Engineer to design, deploy, and optimize networking for large-scale GPU clusters driving AI workloads. You will build low-latency Ethernet/InfiniBand fabrics, configure NVIDIA Spectrum switches, and implement automation with Python, Ansible, and IaC to boost performance and reliability across HPC environments.

Collaborate with platform, storage, Kubernetes, and infra teams to maximize cluster performance, reliability, and scalable

Qualifications

• 5+ years in Network Engineering for large-scale data centres, cloud, or AI infrastructure.
• Deep knowledge of spine-leaf architectures and data centre networks.
• Hands-on with NVIDIA Spectrum switches and Cumulus Linux.
• Experience with Ethernet fabrics for AI/HPC workloads and modern routing.
• Scripting in Python/Bash and IaC, plus automation/telemetry experience.

Responsibilities

• Design, deploy, and operate high-performance AI networking for large GPU clusters.
• Build low-latency Ethernet/InfiniBand fabrics for distributed AI training/inference.
• Configure NVIDIA Spectrum, Cumulus Linux, and spine-leaf architectures.
• Optimize performance with RDMA/RoCE/GPUDirect RDMA and NCCL.
• Collaborate with platform/storage/Kubernetes teams to maximize cluster performance.

Skills

Spine-leaf networking

NVIDIA Spectrum switches

Cumulus Linux

RDMA / RoCE / InfiniBand

BGP / EVPN-VXLAN / MLAG

Linux systems / scripting

Infrastructure-as-Code

Network telemetry

GPU infrastructure

Tools

Python

Bash

Ansible

Kubernetes

Git

Job description

Hamilton Barnes Associates Limited is seeking a Senior AI Network Engineer to design, deploy, and optimize networking for large-scale GPU clusters driving AI workloads. You will build low-latency Ethernet/InfiniBand fabrics, configure NVIDIA Spectrum switches, and implement automation with Python, Ansible, and IaC to boost performance and reliability across HPC environments.

Collaborate with platform, storage, Kubernetes, and infra teams to maximize cluster performance, reliability, and scalable