Senior Data Center Network Architect for AI Cloud

Nebius; United States; On-site; USD 125,000 - 180,000; Full time

Benefits offered by this job

Health insurance

401(k) plan with company contribution

Paid time off

Job summary

Nebius is seeking a Senior Network Engineer to design, build, and operate large-scale, high-performance data center networks supporting GPU-dense AI workloads. You will own end-to-end deployment of routing and switching infrastructure across production environments.

You will collaborate with hardware, systems, and software teams to integrate networking with compute and storage, document designs, and lead testing and optimization efforts for reliability and scalability.

Qualifications

• 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/IPv6 stack in CLOS-based data center environments.

Responsibilities

• 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/IPv6 stack in large-scale distributed environments.
• Optimize traffic engineering, ECMP, and load-balancing strategies to ensure efficient utilization of network resources.

Skills

MPLS

BGP/IS-IS

VXLAN

SR-MPLS/SRv6

ECMP

Data center design

Remote work

Networking automation

Network troubleshooting

Tools

Juniper gear

Arista gear

Huawei gear

Mellanox gear

Job description

Nebius is seeking a Senior Network Engineer to design, build, and operate large-scale, high-performance data center networks supporting GPU-dense AI workloads. You will own end-to-end deployment of routing and switching infrastructure across production environments.

You will collaborate with hardware, systems, and software teams to integrate networking with compute and storage, document designs, and lead testing and optimization efforts for reliability and scalability.