L3 Support Engineer

Nebius
Mäntsälä, Finland
On-site

Who this role is best for

Geared toward technically proficient engineers comfortable with deep Linux diagnostics and cross-site collaboration, this role demands a candidate with strong vendor engagement skills and a willingness to travel for on-site troubleshooting.

Best fit for

  • Candidates with experience in datacenter server troubleshooting and firmware management
    — “deep Linux diagnostics across Europe and the US”
  • Individuals who can detect patterns and drive long-term fixes in complex environments
    — “detect recurring patterns across sites and convert findings into durable fixes”
  • Engineers with a history of cross-functional collaboration with R&D and ODM vendors
    — “drive permanent fixes with R&D and ODM vendors”

Things to consider

  • Travel to datacenters is expected for complex troubleshooting and incident containment
    — “Travel to datacenters for complex troubleshooting”
  • This role requires a high level of technical independence during high-severity incidents
    — “Own technical workstreams during high-severity incidents”

How to stand out

  • Highlight experience in GPU server platforms and Linux log correlation in your resume
    — “Strong familiarity with GPU server platforms and tooling”
  • Demonstrate your ability to create scalable runbooks and troubleshooting guides
    — “Create scalable runbooks, troubleshooting guides, and error catalogs”
  • Showcase your scripting skills in bash and Python for log collection and analysis
    — “Scripting skills (bash and basic Python) for log collection”
  • Emphasize your experience with firmware lifecycle and staged rollouts
    — “Experience with firmware lifecycle, and staged rollouts”
Pace · Fast PacedCollaboration · HighAutonomy · MediumDecision Impact · Team

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • lead root cause analysis beyond L2 depth
  • detect recurring patterns across sites
  • convert findings into durable fixes
  • build evidence packs and drive escalations with ODM and R&D
  • support validation and rollout of firmware updates
Typical background
strong hands-on experience with datacenter serversdeep Linux troubleshooting

Skills & requirements

Required

Datacenter ServersDeep Linux TroubleshootingStructured Incident ResponseCommunication Under PressureDiagnosing Across Hardware, Bios/bmc Firmware, And Linux

Preferred

GPU Server PlatformsIpmitool And Redfish WorkflowsScripting Skills (bash And Basic Python)Ocp-based PlatformsSupporting Enterprise Bare Metal Customers

Stack & domain

LinuxGPUFirmwareBIOSBMCDatacenter ServersScripting (bash, Python)CommunicationProblem-solvingTeamworkCloud InfrastructureAIML

About the role

Original posting from Nebius

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.

The role 

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 Collaboration

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.

Firmware & Platform Readiness (BIOS/BMC)

Support validation and rollout of firmware updates (risk assessment, staging, rollback planning).

Help operationalize platform standards across datacenters.

Knowledge & Enablement

Create scalable runbooks, troubleshooting guides, and error catalogs.

Turn investigations into playbooks that elevate L1/L2 teams.

Hands-on Support (As Needed)

Travel to datacenters for complex troubleshooting, new platform readiness, or incident containment.

We expect you to have: 

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).

It will be an added bonus if you have: 

Strong familiarity with GPU server platforms and tooling (for example: nvidia-smi, dcgmi, Linux logs correlation).

Experience with ipmitool and Redfish workflows, firmware lifecycle, and staged rollouts.

Scripting skills (bash and basic Python) for log collection, triage automation, and simple reliability analysis.

Exposure to OCP-based platforms and ODM manufacturing ecosystems.

Experience supporting enterprise bare metal customers under contractual SLAs.

Benefits & Perks:

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

What's it like to work at Nebius:

Fast moving - Bold thinking - Constant growth - Meaningful impact - Trust and real ownership - Opportunity to shape the future of AI 

Equal Opportunity Statement:

Nebius is an equal opportunity employer. We are committed to fostering an inclusive and diverse workplace and to providing equal employment opportunities in all aspects of employment. We do not discriminate on the basis of race, color, religion, sex (including pregnancy), national origin, ancestry, age, disability, genetic information, marital status, veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by applicable law.

Applicants must be authorized to work in the country in which they apply and will be required to provide proof of employment eligibility as a condition of hire. 

If you need accommodations during the application process, please let us know.

Source: Nebius careers

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