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HPC Cluster Architect

3 weeks, 3 days ago
United Kingdom
Full-time
Senior
Infrastructure Engineer
DevOps and Infrastructure
Linux Serverless
Apply Now
NexGen Cloud

NexGen Cloud

NexGen Cloud is Europe's leading sustainable cloud Infrastructure as a Service (IaaS) provider, specializing in high-performance computing (HPC) and GPU infrastructure. With a focus on sustainability and innovation, NexGen Cloud offers GPU as a Service...

IT Services
11-50
Founded 2020
View All Jobs 8

Description

  • Own end-to-end cluster architecture for large-scale NVIDIA GPU deployments from customer requirements through production handover.
  • Design high-performance network fabrics across compute, storage, and WAN, including topology, oversubscription, and scaling strategies.
  • Define rack layouts, BOMs, and power and cooling designs for production-ready deployments.
  • Engage with OEMs and vendors to validate hardware configurations, review quotes, and optimize designs commercially and technically.
  • Provide technical oversight during deployment and bring-up, including hardware validation and performance testing.
  • Act as escalation point for complex integration issues during implementation.
  • Serve as a senior technical leader across Solutions Architecture, Cloud Engineering, and data centre partners.
  • Contribute to standardised reference designs and help build out the HPC engineering function.

Requirements

  • Proven experience designing and delivering GPU-based HPC or AI clusters at scale across the full lifecycle from design through procurement, deployment, and validation.
  • Deep hands-on knowledge of NVIDIA GPU platforms such as H100, H200, or B-series, and NVIDIA reference architectures.
  • Strong InfiniBand/RDMA design experience, including topology, performance tuning, and high-performance Ethernet fabrics.
  • Solid grounding in Linux systems, PCIe topology, NUMA alignment, and server-level performance considerations.
  • Background from an OEM, hyperscaler, neo-cloud, or enterprise/research HPC environment with full design-to-deployment exposure.
  • Confidence engaging with customers, vendors, OEMs, and internal engineering teams as a technical authority.
  • Experience with Spectrum-X or next-generation Ethernet fabrics is preferred.
  • Prior involvement in large-scale cluster deployments of 1,000+ GPUs and benchmarking with NCCL or MLPerf is preferred.
  • Exposure to air-cooled and liquid-cooled HPC environments and/or automation or infrastructure-as-code is preferred.

Benefits

  • Competitive salary and annual discretionary bonus scheme.
  • Employee wellbeing benefits.
  • 25 days of holiday plus public holidays.
  • Flexible working arrangements, including remote or hybrid work depending on role and location.
  • Real ownership and autonomy with the trust to take initiative and experiment.
  • Clear career progression and growth opportunities in a fast-growing company.
  • A collaborative, international culture built on trust, transparency, and ownership.

Interested in this position?

Apply directly on the company website

Apply Now

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