L3 Support Engineer (Data Center)

The role

We are building our L3 Support Line from scratch to serve as the data center 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 data center in Paris or Béthune, France.

Responsibilities

• 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.
• Build 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.
• Support validation and rollout of firmware updates (risk assessment, staging, rollback planning).
• Create scalable runbooks, troubleshooting guides, and error catalogs.
• Turn investigations into playbooks that elevate L1/L2 teams.
• Travel to data centers for complex troubleshooting, new platform readiness, or incident containment.

Qualifications

• Strong hands-on experience with data center servers and deep Linux troubleshooting.
• Ability to diagnose across hardware, BIOS/BMC firmware, and Linux (logs, drivers, storage basics, performance triage).
• Structured incident response experience and clear communication under pressure.
• Experience driving evidence-based escalations with vendors/R&D.
• Fluent English (written and spoken).
• Optional: strong familiarity with GPU server platforms and tooling (e.g., nvidia-smi, dcgmi, Linux logs correlation).
• Optional: experience with ipmitool and Redfish workflows, firmware lifecycle, and staged rollouts.
• Optional: scripting skills (bash and basic Python) for log collection, triage automation, and simple reliability analysis.
• Optional: exposure to OCP-based platforms and ODM manufacturing ecosystems.
• Optional: experience supporting enterprise bare metal customers under contractual SLAs.

Benefits

• Competitive salary and comprehensive benefits package.
• Opportunities for professional growth within Nebius.
• Flexible working arrangements.
• A dynamic and collaborative work environment that values initiative and innovation.