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DWDM-IP Engineer

Nebius· Network Infrastructure
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Hybrid (Amsterdam)Posted 1w ago

About the role

Optical Network/DWDM-IP Engineer responsible for the lifecycle of Nebius's optical transport network and its integration with the IP/MPLS core, spanning short-haul to long-haul DWDM systems with a full-stack transport mindset.

Responsibilities

  • Hybrid Infrastructure Management: Configure, deploy, and scale multi-vendor DWDM systems (Ciena, Nokia-Infinera, ADVA/Adtran) to support 400G/800G+ coherent interfaces.
  • Operational Excellence: Lead the troubleshooting of complex optical-to-IP failures, ensuring minimal MTTR for critical backbone spans and DCI links.
  • Network Evolution: Design and test new optical solutions, focusing on Open Line Systems (OLS), disaggregated hardware, and pluggable coherent optics (QSFP-DD/OSFP).
  • Automation & Data Integrity: Build and maintain the Source of Truth (Netbox-based) for lambdas, channels, and dark fiber assets; participating in automate commissioning via Python/gNMI.
  • Strategic Collaboration: Work with Data Center Ops and IP Engineering to align optical capacity with traffic engineering (SR-MPLS) demands.
  • Vendor & Asset Management: Manage relationships with dark fiber providers and channel suppliers; monitor performance against SLAs.

Qualifications

  • Deep Optical Expertise: Knowledge of ROADM networks and use-cases, optical amplification (EDFA/Raman), understand Coherent modulation formats and its characteristics in multi span long-haul scenarios.
  • IP/MPLS Proficiency: Understanding of the IP/MPLS stack (BGP/OSPF/IS-IS) to perform initial debugs on packet-over-optical issues.
  • Hands-on with Production Platforms: Direct experience with ADVA/Adtran platforms or Ciena/Nokia-Infinera.
  • Automation Mindset: Proficiency in Python for automating routine inventory synchronization.
  • Diagnostic Precision: Expert use of OTDR, OSA, and BERT equipment for characterization of short, middle, and long-haul fiber spans.
  • Mobility: Willingness to travel to key sites in the USA/EU/APAC for critical hardware deployments and complex physical-layer audits.

Skills

Required:Optical networking and DWDMIP/MPLSProduction hardware (DWDM platforms)Automation (Python)Testing/Diagnostics
Nice to have:Travel readiness

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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