HPC/AI Cluster Network Architect (Remote-Friendly)

Commonai C.I.C.; Cambourne; Hybrid; GBP 70,000 - 110,000; Full time

Benefits offered by this job

Pension plan

Professional development

Hybrid office near Cambridge station

Competitive salary

Job summary

CommonAI CIC is seeking an experienced network design engineer to architect physical networks for HPC and AI clusters. You will own the end-to-end cabling, topology, switch placement, and BOMs for multiple UK facilities, ensuring robust, scalable fabric designs.

You will collaborate with project managers, operators, and vendors to deliver detailed drawings, specs, and as-built documentation. A strong background in fibre optics and lossless fabrics is essential.

Qualifications

• Experience designing networks for HPC/AI clusters from spec to install.
• Clear understanding of out-of-band, frontend and accelerator fabric networking.
• Knowledge of InfiniBand, RoCE or similar lossless fabrics and topologies.

Responsibilities

• Design physical network for each cluster: topology, switch placement, cable schedules, BOMs.
• Specify fibre/copper infrastructure in detail and select transceivers/ DACs / AOCs.
• Plan changes to existing clusters to enable re-cabling with minimal downtime.
• Act as technical authority for suppliers: drawings, specs, quotations, inspections.
• Maintain accurate as-built documentation for racks, cables, ports and links.
• Coordinate with PMs and operators on sequencing, bring-up and fault-finding.

Skills

Network design

HPC/AI cluster networks

InfiniBand/RoCE

Fibre optics knowledge

Clear design communication

Education

Depth in relevant field

Tools

NetBox

Patch panels & cabling

Colocation facilities

Job description

CommonAI CIC is seeking an experienced network design engineer to architect physical networks for HPC and AI clusters. You will own the end-to-end cabling, topology, switch placement, and BOMs for multiple UK facilities, ensuring robust, scalable fabric designs.

You will collaborate with project managers, operators, and vendors to deliver detailed drawings, specs, and as-built documentation. A strong background in fibre optics and lossless fabrics is essential.