Senior GPU HPC Engineer: InfiniBand & KVM Optimization

Nebius; Greater London; On-site; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Competitive compensation

Career growth

Flexibility and ownership

Collaborative culture

Impactful AI projects

International teams

Job summary

Nebius is seeking a Senior HPC Cluster Engineer to advance our hyperscaler platform. You will optimize GPU clusters, InfiniBand networks and the KVM/QEMU stack, collaborating with hardware virtualization and device emulation teams to ensure top performance and security in multi-GPU HPC environments.

The role emphasizes troubleshooting, integration of new hardware, and automation to sustain high-throughput AI workloads across Europe and the UK, with a fast-moving, innovative culture and strong

Qualifications

• 5+ years of professional experience in system-level software development with a focus on performance optimization.
• 3+ years hands-on experience with Linux systems (administration, troubleshooting, performance tuning).
• In-depth understanding of server architecture including PCIe devices, NICs, Linux OS/Kernel, and HPC systems.
• Strong proficiency in one or more performance-oriented programming languages (C/C++, Go, Python).

Responsibilities

• Tune the performance of GPU clusters and InfiniBand networks for HPC and GPU-based environments.
• Analyze and troubleshoot root causes related to GPUs and InfiniBand networks; propose corrective actions.
• Integrate new hardware into existing infrastructure, including GPU hardware support via Kubernetes, QEMU, and KVM.
• Enhance automation systems for proactive monitoring and fault detection in GPU and InfiniBand environments.
• Configure and manage GPU devices and InfiniBand fabrics for efficient and reliable operation.

Skills

System-level development

Linux administration

C/C++

Go

Python

Tools

KVM/QEMU

RDMA/InfiniBand

MPI/NCCL

Job description

Nebius is seeking a Senior HPC Cluster Engineer to advance our hyperscaler platform. You will optimize GPU clusters, InfiniBand networks and the KVM/QEMU stack, collaborating with hardware virtualization and device emulation teams to ensure top performance and security in multi-GPU HPC environments.

The role emphasizes troubleshooting, integration of new hardware, and automation to sustain high-throughput AI workloads across Europe and the UK, with a fast-moving, innovative culture and strong