Lead GPU Infrastructure Architect for Scalable AI Clusters

Hamilton Barnes Associates Limited; Greater London; On-site; GBP 110,000 - 150,000; Full time

Job summary

Hamilton Barnes Associates Limited is seeking a senior infrastructure architect to design and own a landmark GPU deployment. You will specify cluster topology, networking, and power/cooling for a next-generation B300 system, with cost modelling for the full build.

This role partners with board-level stakeholders in a fast-moving investment platform, translating technical decisions into commercial terms and guiding vendor negotiations. DOE bonus applies.

Qualifications

• 7+ years in infrastructure/solutions architecture with GPU/HPC clustering experience.
• Hands-on GPU/HPC cluster design, data centre infrastructure, and power/cooling planning.
• Strong ability to translate technical details into commercial costing narratives.

Responsibilities

• Specify and design GPU cluster architecture for large-scale B300 deployment across compute, networking, storage, and interconnect.
• Produce detailed costing models for cluster builds including hardware, data centre, power and OPEX.
• Evaluate data centre/colocation partners capable of supporting high-density GPU racks.
• Define networking topology (InfiniBand/Ethernet) for distributed training and inference workloads.
• Liaise with vendors/OEMs and data centres to validate specs and negotiate terms.
• Produce technical documentation and board-level summaries translating infra decisions into commercial terms.
• Advise on power, cooling, and rack density requirements for next-gen GPU deployments.

Skills

GPU hardware

NVIDIA H100

NVIDIA H200

NVIDIA B300

server design

data centre infra

InfiniBand

RDMA networking

NVLink

NVSwitch

boardroom comms

costing models

Job description

Hamilton Barnes Associates Limited is seeking a senior infrastructure architect to design and own a landmark GPU deployment. You will specify cluster topology, networking, and power/cooling for a next-generation B300 system, with cost modelling for the full build.

This role partners with board-level stakeholders in a fast-moving investment platform, translating technical decisions into commercial terms and guiding vendor negotiations. DOE bonus applies.