HPC Cluster Architect

NexGen Cloud

HPC Cluster Architect at NexGen Cloud owning end-to-end architecture for large-scale GPU deployments. Engaging with customers and vendors to deliver technically sound infrastructure solutions.

Posted 7/16/2026full-timeRemote • 🇬🇧 United KingdomMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in HPC and AI software stack design, including workload profiling and performance tuning, while effectively engaging with customers and vendors as a technical authority. Proficient in optimizing large-scale GPU deployments and producing clear technical documentation for diverse audiences.

Highest-signal resume keywords

HPC Software Stack DesignGPU Software EnvironmentsContainerization and OrchestrationPerformance TuningTechnical Documentation

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Hard Skills

Workload ProfilingScheduler ConfigurationMPI/NCCL TuningCUDACuDNNNCCLDockerKubernetesPerformance TestingMulti-GPU Optimization

Soft Skills

Customer EngagementTechnical LeadershipClear Communication

Tools & Technologies

InfiniBandRDMANVLinkNVSwitchNVIDIA GPU OperatorSLURMPBSDeepSpeedJAXArchitecture Diagrams

Industry Keywords

GPU DeploymentsHPC EnvironmentAI TrainingDesign-to-Deployment LifecycleTechnical Oversight

Tech Stack

Tools & technologies

CloudDockerKubernetesNode.jsPyTorch

About the role

Key responsibilities & impact

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
Design high-performance network fabrics across compute (InfiniBand, RDMA, NVLink/NVSwitch), storage, and WAN — defining topology, oversubscription models, and scaling strategies
Engage directly with OEMs and vendors — validating hardware configurations, reviewing quotes, and ensuring designs are both technically sound and commercially optimised
Provide technical oversight during deployment and bring-up — supporting hardware validation, performance testing, and acting as escalation point for complex integration issues
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

Requirements

What you’ll need

Proven experience in HPC or AI software stack design and delivery at scale — including workload profiling, scheduler configuration (SLURM, PBS, or equivalent), MPI/NCCL tuning, and distributed training frameworks such as PyTorch, JAX, or DeepSpeed.
Deep understanding of GPU software environments: CUDA, cuDNN, NCCL, driver stacks, and the tooling required to run large-scale AI training and inference workloads reliably in production.
Hands-on experience optimising AI and HPC workloads across multi-GPU and multi-node configurations — including profiling, bottleneck identification, and performance tuning at both the application and infrastructure layer.
Strong working knowledge of containerisation and orchestration in HPC/AI contexts: Docker, Kubernetes, NVIDIA GPU Operator, and container-native workload management.
Background in an OEM, hyperscaler, neo-cloud, or enterprise/research HPC environment, with demonstrable exposure to the full design-to-deployment lifecycle for GPU-accelerated workloads.
Ability to produce clear, professional technical documentation and architecture diagrams suitable for both engineering and board-level audiences.
Confident engaging with customers, vendors, and internal engineering teams as a technical authority — able to translate complex software and performance trade-offs into clear, actionable decisions.

Benefits

Comp & perks

Competitive salary and annual discretionary bonus scheme
Employee wellbeing benefits
25 days of holiday, plus public holidays
Flexible working arrangements (remote or hybrid, depending on role and location)
Real ownership and autonomy, with the trust to take initiative and experiment
The opportunity to make a visible, meaningful impact as we scale
Clear career progression and growth opportunities in a fast-growing company
A collaborative, international culture built on trust, transparency, and ownership
The chance to help shape NexGen Cloud's team, culture, and future alongside ambitious, mission-driven colleagues