About Nebius:Nebius is leading a new era in cloud infrastructure for the integral 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.

Para presentar una candidatura, simplemente lea la siguiente descripción del puesto y asegúrese de adjuntar los documentos pertinentes.
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 roleWe’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.
In this position, you will be responsible for:
- Tuning the performance of GPU clusters and InfiniBand networks to ensure 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, including support for new GPU hardwar

📌 Senior HPC Cluster Engineer (Madrid)
🏢 Nebius Group
📍 Madrid