L3 Support Engineer
About this role
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.
Responsibilities
- We are building our L3 Support Line from scratch to serve as the datacenter center of expertise for servers, firmware (BIOS/BMC), and deep Linux diagnostics across Europe and the US.
- This is a senior technical role focused on deep investigations, cross-site pattern detection, and driving permanent fixes with R&D and ODM vendors. You will turn complex incidents into scalable solutions and elevate L1/L2 capabilities through strong technical enablement.
- You're welcome to work in our DC in Mäntsälä, Finland.
- Your responsibilities will include:
- Deep Technical Investigation (Primary Focus)Lead root cause analysis beyond L2 depth (GPU failures, firmware issues, Linux-level faults, HW/SW interactions).
- Detect recurring patterns across sites and convert findings into durable fixes.
- Own technical workstreams during high-severity incidents.
- Vendor & R&D CollaborationBuild evidence packs and drive escalations with ODM and R&D.
- Push for firmware, component, and platform-level resolutions.
- Track outcomes and ensure knowledge flows back to operations.
- Firmware & Platform Readiness (BIOS/BMC)Support validation and rollout of firmware updates (risk assessment, staging, rollback planning).
- Help operationalize platform standar
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.