DWDM-IP Engineer
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 looking for an Optical & IP Transport Engineer (DWDM/IP) to own the design, deployment, and operation of large-scale optical transport networks supporting high-density, latency-sensitive infrastructure. You will work at the intersection of DWDM systems and IP/MPLS layers, ensuring reliable packet delivery across long-haul and metro fiber networks.
This role requires deep understanding of optical physics and packet transport, with hands-on responsibility for production networks. You will be involved in end-to-end lifecycle management—from planning and turn-up to troubleshooting complex cross-layer issues impacting performance and availability. The position demands strong diagnostic capabilities, automation-driven operations, and the ability to operate close to the hardware in mission-critical environments.
Your responsibilities will include:
Design, deploy, and operate DWDM-based transport networks across long-haul and metro environments
Perform wavelength provisioning, optical power tuning, and amplification design (EDFA/Raman) to ensure optimal link performance
Troubleshoot cross-layer issues spanning optical transport and IP/MPLS networks, including packet loss, latency, and signal degradation
Execute fiber characterization and fault isolation using OTDR, OSA, and BERT tools across various span distances
Work directly with production platforms (Ciena, Infinera, ADVA) for provisioning, upgrades, and incident resolution
Develop and maintain Python-based automation for optical health checks, telemetry ingestion, and inventory synchronization
Participate in network expansions and hardware deployments, including on-site support for critical rollouts and audits
Collaborate with IP engineering teams to ensure alignment between optical transport and routing layers
Drive root cause analysis and implement preventive measures to improve fleet-wide reliability and performance
What we expect you to have:
Strong expertise in DWDM systems, including wavelength routing, optical amplification (EDFA/Raman), and dispersion management in long-haul networks
Solid understanding of IP/MPLS fundamentals, including routing protocols such as BGP, OSPF, or IS-IS, and MPLS signaling
Hands-on experience with production optical platforms such as Ciena (6500/Waveserver), Infinera, or ADVA
Proficiency in Python for automation of operational workflows and network validation tasks
Experience using optical diagnostic tools (OTDR, OSA, BERT) for fiber analysis and troubleshooting
Ability to debug packet-over-optical issues across layers with precision and speed
Willingness to travel to data center and network sites across the US/EU for deployments and audits
It will be an added bonus if you have:
Experience with Linux-based network management systems and streaming telemetry for optical monitoring
Background in network modernization projects, including migrations from 100G to 400G/800G architectures
Familiarity with Segment Routing (SR-MPLS or SRv6) and its interaction with optical transport performance
Working conditions:
Remote role based in the United States
Travel required for on-site deployments and physical-layer audits
Key employee benefits:
Comprehensive health insurance (medical, dental, vision)
401(k) plan with company contribution
Generous paid time off and sick leave
Paid parental leave
Flexible working hours
Professional development support
Compensation:
Base salary: $125,000 – $180,000 per year
Performance-based bonus included
Benefits & Perks:
Competitive compensation
Career growth and learning opportunities
Flexibility and work-life balance
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.