Senior L3 Hardware Infra Engineer - Data Center & Firmware

Nebius Group; Mäntsälä; Remote; EUR 110,000 - 160,000; Full time

Benefits offered by this job

Competitive compensation

Career growth and learning

Flexibility and ownership

Collaborative and innovative culture

Opportunity to work on impactful AI/ML

Job summary

Nebius Group in Mäntsälä, Finland, is building a new L3 Support line to serve as the datacenter center of expertise for servers, BIOS/BMC firmware, and Linux diagnostics across Europe and the US.

This senior technical role focuses 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.

Qualifications

• Strong hands-on experience with datacenter 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).

Responsibilities

• Deep Technical Investigation: lead root cause analysis beyond L2 for GPU, firmware, Linux faults; drive durable fixes.
• Vendor & R&D Collaboration: build evidence packs, escalate with ODM and R&D; push for firmware and platform-level resolutions.
• Firmware & Platform Readiness: validate and rollout firmware updates with risk assessment and rollback planning.
• Knowledge & Enablement: create scalable runbooks, troubleshooting guides, and playbooks for L1/L2.
• Hands-on Support: travel to datacenters for complex troubleshooting and incident containment.

Skills

Datacenter servers

Linux troubleshooting

Incident response

Vendor escalation

Fluent English

Tools

ipmitool

Redfish workflows

nvidia-smi

dcgmi

Job description

Nebius Group in Mäntsälä, Finland, is building a new L3 Support line to serve as the datacenter center of expertise for servers, BIOS/BMC firmware, and Linux diagnostics across Europe and the US.

This senior technical role focuses 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.