Senior Hardware engineer (R&D / GPU / AI)

About Nebius: 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. Built by engineers, for engineers. From large-scale GPU orchestration to inference optimization, we own the hard problems across compute, storage, networking and applied AI. Listed on Nasdaq (NBIS) and headquartered in Amsterdam, we have a global footprint with R&D hubs across Europe, the UK, North America and Israel. Our team of 1,500+ includes hundreds of engineers with deep expertise across hardware, software and AI R&D. The role Nebius is looking for a System Engineer (Servers Hardware R&D Team) to support our expanding North American operations. This position requires occasional on-site presence in our Data Center locations as needed. Your responsibilities will include: Participate in the design, deployment, and maintenance of high-performance cloud systems optimized for AI workloads. Arrange and perform hardware R&D tests and experiments on-site in data center environments. Troubleshoot and resolve complex system issues related to GPUs, networking (InfiniBand, NVLink), PCIe, and server infrastructure. Conduct deep investigations into hardware, software,