Senior HPC Cluster Engineer

Stack

Responsibilities

• ▹Tune the performance of GPU clusters and InfiniBand networks in HPC and GPU-based environments
• ▹Analyze and troubleshoot the root cause of GPU and InfiniBand network issues, proposing corrective actions
• ▹Integrate new hardware into the existing infrastructure, including support via software stacks like Kubernetes, QEMU, and KVM
• ▹Develop automation systems for proactive monitoring, detection, and resolution of issues in GPU and InfiniBand environments
• ▹Configure and manage GPU devices and InfiniBand fabrics

Requirements

• ▹5+ years of professional experience in system-level software development (performance optimization, low-level programming)
• ▹3+ years of hands-on experience with Linux systems (administration, troubleshooting, performance tuning)
• ▹In-depth understanding of server architecture: PCIe devices, NICs, Linux OS/kernel, HPC systems
• ▹Strong proficiency in a performance-oriented programming language (C/C++, Go, Python)

Nice to have

• ▹GPU end-to-end testing experience in a cluster environment using InfiniBand networking
• ▹Proven track record analyzing and optimizing HPC workload performance (simulations, data analysis, AI/ML)
• ▹Familiarity with RDMA, RoCE, and InfiniBand protocols
• ▹Background in Software-Defined Networking (SDN) and HPC cluster networking
• ▹Understanding of QEMU/KVM virtualization and managing virtualized environments
• ▹Experience with deep learning frameworks (PyTorch, TensorFlow) and their integration with HPC systems
• ▹Familiarity with collective communication libraries like MPI and NCCL

What we offer

• ▹Competitive compensation
• ▹Career growth and learning opportunities

About the company

Nebius is building a full-stack AI cloud platform for the global AI economy; headquartered in Amsterdam and listed on Nasdaq (NBIS), it has 1,500+ employees across R&D hubs in Europe, the UK, North America, and Israel.