HPC Cluster Architect

<div data-test-render-count="1"> <div class="group"> <div class="contents"> <div class="group relative relative pb-3" data-is-streaming="false"> <div class="font-claude-response relative leading-[1.65rem] [&amp;_pre>div]:bg-bg-000/50 [&amp;_pre>div]:border-0.5 [&amp;_pre>div]:border-border-400 [&amp;_.ignore-pre-bg>div]:bg-transparent [&amp;_.standard-markdown_:is(p,blockquote,h1,h2,h3,h4,h5,h6)]:pl-2 [&amp;_.standard-markdown_:is(p,blockquote,ul,ol,h1,h2,h3,h4,h5,h6)]:pr-8 [&amp;_.progressive-markdown_:is(p,blockquote,h1,h2,h3,h4,h5,h6)]:pl-2 [&amp;_.progressive-markdown_:is(p,blockquote,ul,ol,h1,h2,h3,h4,h5,h6)]:pr-8"> <div> <div class="standard-markdown grid-cols-1 grid [&amp;_>_*]:min-w-0 gap-3 standard-markdown"> <p class="font-claude-response-body break-words whitespace-normal leading-[1.7]"><strong>HPC Cluster Architect</strong></p> <p class="font-claude-response-body break-words whitespace-pre-wrap leading-[1.7]">Location: UK (Remote)</p> <p class="font-claude-response-body break-words whitespace-pre-wrap leading-[1.7]">Department: Infrastructure</p> <p class="font-claude-response-body break-words whitespace-pre-wrap leading-[1.7]">Reporting to: Head of Infrastructure</p> <h4 class="text-text-100 mt-2 -mb-1 text-base font-bold">ABOUT NEXGEN CLOUD:</h4> <p class="font-claude-response-body break-words whitespace-normal leading-[1.7]">NexGen Cloud is the company behind Hyperstack, a full-stack AI cloud serving tens of thousands of customers from AI researchers to enterprises running the world's most compute-intensive workloads. We deliver on-demand and private GPU infrastructure to teams who treat performance as a requirement, not a feature.</p> <p class="font-claude-response-body break-words whitespace-normal leading-[1.7]">We're a tight-knit, fast-moving team working at the cutting edge of AI cloud infrastructure. We practice what we preach, equipping our people with AI at every level so we can solve harder problems, ship faster, and keep raising the bar for what enterprise GPU infrastructure looks like.</p> <h4 class="text-text-100 mt-2 -mb-1 text-base font-bold">THE ROLE: HPC Cluster Architect</h4> <p class="font-claude-response-body break-words whitespace-normal leading-[1.7]">This role exists because NexGen Cloud is winning large-scale dedicated GPU cluster contracts and needs someone who can own the full architecture cycle — from first customer conversation to production deployment. You'll have direct ownership over cluster architecture across compute, networking, storage, and physical design — translating customer requirements into production-ready, commercially optimised GPU deployments.</p> <p class="font-claude-response-body break-words whitespace-normal leading-[1.7]">This is a senior hands-on role for someone who has lived and breathed HPC cluster design and wants to be the technical authority, not one voice in a committee. You'll own designs end-to-end and see them go live.</p> <h4 class="text-text-100 mt-2 -mb-1 text-base font-bold">WHAT YOU'LL BE DOING:</h4> <p class="font-claude-response-body break-words whitespace-normal leading-[1.7]">Rather than a long checklist, here's what success in this role looks like:</p> <ul class="[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3"> <li class="whitespace-normal break-words pl-2">Own end-to-end cluster architecture for large-scale NVIDIA GPU deployments — from customer requirement through rack layouts, BOM, power and cooling design, to production handover</li> <li class="whitespace-normal break-words pl-2">Design high-performance network fabrics across compute (InfiniBand, RDMA, NVLink/NVSwitch), storage, and WAN — defining topology, oversubscription models, and scaling strategies</li> <li class="whitespace-normal break-words pl-2">Engage directly with OEMs and vendors — validating hardware configurations, reviewing quotes, and ensuring designs are both technically sound and commercially optimised</li> <li class="whitespace-normal break-words pl-2">Provide technical oversight during deployment and bring-up — supporting hardware validation, performance testing, and acting as escalation point for complex integration issues</li> <li class="whitespace-normal break-words pl-2">Act as a senior technical leader across Solutions Architecture, Cloud Engineering, and data centre partners — contributing to standardised reference designs and building out the HPC engineering function</li> </ul> <h4 class="text-text-100 mt-2 -mb-1 text-base font-bold">ABOUT YOU:</h4> <p class="font-claude-response-body break-words whitespace-normal leading-[1.7]">We're more interested in <strong>how you think and work</strong> than in a perfect CV. You'll likely bring a combination of the following:</p> <h5 class="text-text-100 mt-2 -mb-1 text-base font-bold">Essential</h5> <ul class="[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3"> <li class="whitespace-normal break-words pl-2">Proven experience designing and delivering GPU-based HPC or AI clusters at scale — covering the full lifecycle from design through procurement, deployment, and validation</li> <li class="whitespace-normal break-words pl-2">Deep hands-on knowledge of NVIDIA GPU platforms (H100/H200/B-series) and NVIDIA reference architectures</li> <li class="whitespace-normal break-words pl-2">Strong InfiniBand/RDMA design experience — topology, performance tuning, and high-performance Ethernet fabrics</li> <li class="whitespace-normal break-words pl-2">Solid grounding in Linux systems, PCIe topology, NUMA alignment, and server-level performance considerations</li> <li class="whitespace-normal break-words pl-2">Background from an OEM, hyperscaler, neo-cloud, or enterprise/research HPC environment — with demonstrable exposure to the full design-to-deployment lifecycle</li> <li class="whitespace-normal break-words pl-2">Confident engaging with customers, vendors, OEMs, and internal engineering teams as a technical authority — able to translate complex design trade-offs into clear decisions</li> </ul> <h5 class="text-text-100 mt-2 -mb-1 text-base font-bold">Nice to Have</h5> <ul class="[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3"> <li class="whitespace-normal break-words pl-2">Experience with Spectrum-X or next-generation Ethernet fabrics</li> <li class="whitespace-normal break-words pl-2">Prior involvement in large-scale cluster deployments (1,000+ GPUs) and performance benchmarking (NCCL, MLPerf)</li> <li class="whitespace-normal break-words pl-2">Exposure to both air-cooled and liquid-cooled HPC environments, and/or automation/infrastructure-as-code</li> </ul> <h4 class="text-text-100 mt-2 -mb-1 text-base font-bold">WHAT WE OFFER:</h4> <ul class="[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3"> <li class="whitespace-normal break-words pl-2">Competitive salary and annual discretionary bonus scheme</li> <li class="whitespace-normal break-words pl-2">Employee wellbeing benefits</li> <li class="whitespace-normal break-words pl-2">25 days of holiday, plus public holidays</li> <li class="whitespace-normal break-words pl-2">Flexible working arrangements (remote or hybrid, depending on role and location)</li> <li class="whitespace-normal break-words pl-2">Real ownership and autonomy, with the trust to take initiative and experiment</li> <li class="whitespace-normal break-words pl-2">The opportunity to make a visible, meaningful impact as we scale</li> <li class="whitespace-normal break-words pl-2">Clear career progression and growth opportunities in a fast-growing company</li> <li class="whitespace-normal break-words pl-2">A collaborative, international culture built on trust, transparency, and ownership</li> <li class="whitespace-normal break-words pl-2">The chance to help shape NexGen Cloud's team, culture, and future alongside ambitious, mission-driven colleagues</li> </ul> <h4 class="text-text-100 mt-2 -mb-1 text-base font-bold">MORE INFORMATION</h4> <p class="font-claude-response-body break-words whitespace-normal leading-[1.7]">Head over to our <a class="underline underline underline-offset-2 decoration-1 decoration-current/40 hover:decoration-current focus:decoration-current" href="https://www.nexgencloud.com/careers?utm_medium=organic&amp;utm_source=google">NexGen Cloud</a> careers page to view current openings and follow us on <a class="underline underline underline-offset-2 decoration-1 decoration-current/40 hover:decoration-current focus:decoration-current" href="https://www.linkedin.com/company/nexgen-cloud">LinkedIn</a> and <a class="underline underline underline-offset-2 decoration-1 decoration-current/40 hover:decoration-current focus:decoration-current" href="https://x.com/CloudNexgen">X</a> to learn more about our journey, newest releases and hear exciting news in the neocloud space.</p> </div> </div> </div> </div> </div> <div class="flex justify-start"> <div class="text-text-300"> <div class="text-text-300 flex items-stretch justify-between"> <div class="w-fit" data-state="closed"> <div class="relative text-text-500 group-hover/btn:text-text-100">&nbsp;</div> </div> <div class="w-fit" data-state="closed">&nbsp;</div> <div class="w-fit" data-state="closed">&nbsp;</div> <div class="flex items-center"> <div class="w-fit" data-state="closed">&nbsp;</div> </div> </div> </div> </div> </div> </div> <div> <div class="ml-1 flex items-center 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