Senior HPC Cluster Engineer — GPU & InfiniBand Expert

Nebius Group; Madrid; Hybrid; EUR 110,000 - 170,000; Full time

Benefits offered by this job

Competitive compensation

Career growth and learning opportuniti

Flexibility and ownership

Collaborative and innovative culture

Opportunity to work on impactful AI

International environment and talented

Job summary

Nebius invites an experienced Senior HPC Cluster Engineer to join our team and advance the hyperscaler platform. You will focus on GPU computing, InfiniBand networks, and the KVM/QEMU stack, collaborating with hardware virtualization to deliver high performance and secure multi-GPU HPC environments.

In this role you will analyze, troubleshoot, and optimize infrastructure, integrate new hardware, and build automation for fault detection.

Qualifications

• 5+ years of professional experience in system-level software development (focused on performance optimization, low-level programming).
• 3+ years of hands-on experience with Linux systems (administration, troubleshooting, and 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

• Tuning the performance of GPU clusters and InfiniBand networks toensure optimal operation in HPC and GPU‑based environments.
• Analyzing and troubleshooting the root cause of issues related to GPUs and InfiniBand networks, and proposing corrective actions.
• Integrating new hardware into the existing infrastructure, includingsupport for new GPU hardware through software stacks like Kubernetes, QEMU, and KVM.
• Enhancing automation systems for proactive monitoring, detecting, and resolving issues in GPU and InfiniBand environments.
• Configuring and managing GPU devices and InfiniBand fabrics, ensuring efficient and reliable operation.

Skills

system-level software development

Linux systems

C/C++

Go

Python

Linux troubleshooting

HPC systems

Tools

Kubernetes

QEMU

KVM

RDMA

RoCE

InfiniBand

MPI

NCCL

PyTorch

TensorFlow

Job description

Nebius invites an experienced Senior HPC Cluster Engineer to join our team and advance the hyperscaler platform. You will focus on GPU computing, InfiniBand networks, and the KVM/QEMU stack, collaborating with hardware virtualization to deliver high performance and secure multi-GPU HPC environments.

In this role you will analyze, troubleshoot, and optimize infrastructure, integrate new hardware, and build automation for fault detection.