Senior HPC Cluster Engineer

pbAbout Nebius /b Nebius is leading a new era in cloud infrastructure for the global AI economy. We are building a full-stack AI cloud platform that supports developers and enterprises from data and model training through to production deployment, without the cost and complexity of building large in-house AI/ML infrastructure. /p pbAbout Nebius /b Nebius is leading a new era in cloud infrastructure for the global AI economy. We are building a full-stack AI cloud platform that supports developers and enterprises from data and model training through to production deployment, without the cost and complexity of building large in-house AI/ML infrastructure. /p pBuilt by engineers, for engineers. From large-scale GPU orchestration to inference optimization, we own the hard problems across compute, storage, networking and applied AI. /p pListed on Nasdaq (NBIS) and headquartered in Amsterdam, we have a global footprint with RD hubs across Europe, the UK, North America and Israel. /p pOur team of 1,500+ includes hundreds of engineers with deep expertise across hardware, software and AI RD. /p h3The role /h3 pWe’re looking for a Senior HPC Cluster Engineer to join our team and play a key role in the development of our cutting-edge hyperscaler platform. The GPU InfiniBand team is responsible for enhancing and optimizing the core components of our Cloud platform, with a specific focus on GPU computing, InfiniBand networks, and the KVM/QEMU stack. You’ll work closely with hardware virtualization and device emulation technologies, ensuring high performance and security in multi‑GPU, HPC environments. The role involves analyzing, troubleshooting, and improving infrastructure to support new hardware, fine-tuning system performance, and automating fault detection and resolution in a complex system. /p h3In This Position, You Will Be Responsible For /h3 ul liTuning the performance of GPU clusters and InfiniBand networks to ensure optimal operation in HPC and GPU-based environments. /li liAnalyzing and troubleshooting the root cause of issues related to GPUs and InfiniBand networks, and proposing corrective actions. /li liIntegrating new hardware into the existing infrastructure, including support for new GPU hardware through software stacks like Kubernetes, QEMU, and KVM. /li liEnhancing automation systems for proactive monitoring, detecting, and resolving issues in GPU and InfiniBand environments. /li liConfiguring and managing GPU devices and InfiniBand fabrics, ensuring efficient and reliable operation. /li /ul h3We Expect You To Have /h3 ul li5+ years of professional experience in system-level software development (focused on performance optimization, low-level programming). /li li3+ years of hands‑on experience with Linux systems (administration, troubleshooting, and performance tuning). /li liIn‑depth understanding of server architecture, including PCIe devices, NICs, Linux OS/Kernel, and high-performance computing (HPC) systems. /li liStrong proficiency in one or more performance-oriented programming languages (C/C++, Go, Python). /li /ul h3It Would Be a Plus If You Have /h3 ul liExperience with GPU end‑to‑end testing in a cluster environment using InfiniBand networking. /li liProven track record of analyzing and optimizing the performance of HPC workloads (e.g., simulations, data analysis, AI/ML workloads). /li liFamiliarity with RDMA, RoCE, and InfiniBand protocols for high‑performance communication. /li liBackground in Software‑Defined Networking (SDN) and experience with HPC cluster networking. /li liUnderstanding of QEMU/KVM virtualization and managing virtualized environments. /li liExperience with deep learning frameworks such as PyTorch and TensorFlow, and their integration with HPC systems. /li liFamiliarity with collective communication libraries like MPI and NCCL for distributed computing. /li /ul pWe conduct coding interviews as part of the process. /p h3Benefits Perks /h3 ul liCompetitive compensation /li liCareer growth and learning opportunities /li liFlexibility and ownership /li liCollaborative and innovative culture /li liOpportunity to work on impactful AI projects /li liInternational environment and talented teams /li /ul h3What's It Like To Work At Nebius /h3 pFast moving
- Bold thinking
- Constant growth
- Meaningful impact
- Trust and real ownership
- Opportunity to shape the future of AI /p h3Equal Opportunity Statement /h3 pNebius is an equal opportunity employer. We are committed to fostering an inclusive and diverse workplace and to providing equal employment opportunities in all aspects of employment. We do not discriminate on the basis of race, color, religion, sex (including pregnancy), national origin, ancestry, age, disability, genetic information, marital status, veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by applicable law. /p pApplicants must be authorized to work in the country in which they apply and will be requir