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L3 Support Engineer

Nebius· Infrastructure
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MäntsäläFull-timePosted 7mo ago

About the role

Senior technical L3 support role focused on deep investigations, cross-site pattern detection, and driving permanent fixes with R&D and ODM vendors for datacenter servers, BIOS/BMC firmware, and Linux diagnostics across Europe and the US. Based in Mäntsälä, Finland.

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).
  • Help operationalize platform standards across datacenters.
  • Create scalable runbooks, troubleshooting guides, and error catalogs.
  • Turn investigations into playbooks that elevate L1/L2 teams.
  • Travel to datacenters for complex troubleshooting, new platform readiness, or incident containment.

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).

Skills

Required:Datacenter server hardware troubleshootingBIOS/BMC firmware analysis and troubleshootingLinux diagnostics and logs analysisIncident response and escalation

Benefits

  • Competitive compensation
  • Career growth and learning opportunities
  • Flexibility and ownership
  • Collaborative and innovative culture
  • Opportunity to work on impactful AI projects
  • International environment and talented teams
Last updated Oct 14, 2026. Interested? Apply on the company site.
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