Senior Network Engineer

Nebius · United States

  • Senior
  • Full-time
  • $125,000 – $180,000
  • Posted 2026-03-23
  • Confirmed live on 25 September 2026

Apply at Nebius

Job description

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.

*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]" data-turn-id="request-WEB:15eea77a-430d-424c-853f-ddcbc7d37ef3-17" data-testid="conversation-turn-8" data-scroll-anchor="true" data-turn="assistant">

The role:

We are looking for a Senior Network Engineer to design, build, and operate large-scale, high-performance data center networks supporting GPU-dense AI workloads. You will take end-to-end ownership of service provider–grade and CLOS-based network infrastructure, ensuring reliability, scalability, and predictable performance across distributed environments. This role requires deep expertise in routing, switching, and modern data center fabrics, with a strong focus on production operations, root cause analysis, and continuous improvement of network systems.

Your responsibilities will include:

•
Design and evolve scalable data center network architectures (CLOS/leaf-spine) for high-throughput, low-latency environments

•
Own end-to-end deployment and lifecycle management of routing and switching infrastructure across production environments

•
Develop and maintain network design documentation, standards, and operational procedures

•
Plan, execute, and validate network infrastructure testing, including vendor evaluation and benchmarking

•
Diagnose and resolve complex network issues across the TCP/IPv4/v6 stack in large-scale distributed environments

•
Optimize traffic engineering, ECMP, and load balancing strategies to ensure efficient utilization of network resources

•
Implement and operate MPLS-based technologies, including L3 VPNs and segment routing (SR-MPLS, SRv6)

•
Collaborate with hardware, systems, and software teams to integrate networking with compute and storage infrastructure

•
Automate network operations and workflows to improve reliability, scalability, and operational efficiency

•
Ensure high availability and performance of production networks through proactive monitoring and continuous improvement

What we expect you to have:

•
Expert-level knowledge (CCIE/JNCIE or equivalent) in MPLS, routing, and switching for service provider and data center networks

•
Strong experience with Ethernet switching, VXLAN, and modern cloud overlay networking technologies

•
Deep expertise in routing protocols including BGP and IS-IS

•
Hands-on experience with segment routing (SR-MPLS, SRv6), L3 MPLS VPNs, and ECMP-based traffic balancing

•
Proven experience designing and documenting large-scale network architectures

•
Experience developing and executing network testing strategies and validating vendor solutions

•
Strong troubleshooting skills across the TCP/IPv4/v6 stack in CLOS-based data center environments

•
Solid understanding of network hardware architecture, QoS mechanisms, and packet processing pipelines

•
Hands-on experience with network equipment from vendors such as Juniper, Arista, Huawei, and Mellanox

•
Working proficiency in English

It will be an added bonus if you have:

•
Working proficiency in an additional European language

•
Experience with public cloud networking and GPU/InfiniBand environments

•
Knowledge of software-defined networking (SDN) overlays in cloud environments

•
Proficiency in Python, Go, or other programming languages in Linux environments

•
Experience using programming languages for network automation and tooling

Working conditions:

•
Remote work within the United States

•
Work closely with globally distributed infrastructure and engineering teams

•
Participation in on-call rotations to support production environments

Key employee benefits:

•
Comprehensive health insurance

•
401(k) plan with company contribution

•
Paid time off and public holidays

•
Flexible working hours

•
Professional development and certification support

Compensation:

•
$125,000 – $180,000 USD per year, depending on experience and qualifications

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

Prepare for the interview

Nothing collected for this employer yet. The Blind 75 is what technical screens draw from; practise it here, with a coach, in Java or Python.

More at Nebius

All open software jobs