Hays
Cloud Engineer
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Job Overview
We are seeking an experienced Private Cloud HPC Network Engineer to join a newly formed team responsible for the design, deployment, and operation of a greenfield on-premises OpenStack private cloud environment. You will play a key role in building and evolving high-performance network infrastructure supporting HPC workloads, working across compute, storage, and platform engineering teams to deliver a scalable, resilient, and highly automated cloud platform.
Location: Cambridge (Hybrid, 2 days per week onsite)
Daily Rate: £600-£650 per day (Inside IR35 via Umbrella)
Contract Length: 6 Months
Start Date: ASAP
Key Responsibilities
- Design and evolve network architecture for large-scale OpenStack private cloud and HPC environments
- Develop and support scalable Leaf-Spine network architectures using BGP, EVPN, VXLAN, and ECMP
- Design networking solutions for high-performance compute, storage, and latency-sensitive workloads
- Integrate physical networking infrastructure with OpenStack technologies including Neutron, OVN, and ML2
- Define network architectures supporting virtual machines, bare-metal platforms, and Kubernetes environments
- Perform network optimisation, benchmarking, observability, and performance tuning across HPC environments
- Work closely with compute, storage, and platform engineering teams to resolve complex cross-domain infrastructure challenges
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Key Requirements
- Strong experience designing and supporting HPC or large-scale compute environments using RoCE, RDMA, and/or InfiniBand
- Strong knowledge of Cisco NX-OS and/or Arista EOS networking platforms
- Deep understanding of BGP, EVPN, VXLAN, ECMP, Layer 2/Layer 3 networking, and Leaf-Spine architectures
- Experience with OpenStack networking services including Neutron, OVN, and ML2
- Strong troubleshooting, network observability, and performance tuning experience within HPC or data centre environments
- Experience with network automation, API-driven infrastructure, and software-defined networking
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Additional Information
- Exposure to Kubernetes networking, Linux administration, Python, Ansible, and Terraform would be highly beneficial
- Experience with SR-IOV, DPDK, SmartNICs, DPUs, and NVMe-over-Fabrics is desirable
- Knowledge of network security architecture, threat modelling, and SRE principles would be advantageous
Interview Process
Two-stage interview process
How to Apply
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