Cloud Network / SDN Engineer

Design and operate high-performance GPU interconnects and multi-tenant SDN for a large-scale AI cloud, ensuring low-latency and secure network environments.

Description

• Design, operate, and troubleshoot multi-tenant SDN: tenant isolation, VPC / overlay networking, and east-west / north-south traffic.
• Build and tune high-performance GPU interconnect fabrics (InfiniBand / RoCE) for distributed training, including lossless config and congestion control (PFC / ECN).
• Plan and operate cross-region interconnect and routing.
• Lead network change management and fast fault localization to minimize tenant impact.
• Partner with Compute and Control Plane teams on network-provisioning automation.
• Define network architecture standards, security boundaries, and observability.

Requirements

• 6+ years in datacenter / cloud networking or SDN.
• Deep expertise in multi-tenant isolation, overlays (VXLAN / EVPN), and L2 / L3 design.
• Hands-on with high-performance fabrics: InfiniBand and / or RoCE, RDMA — strongly preferred for GPU / HPC clusters.
• Experience with SDN controllers and network automation.
• Strong troubleshooting / fault-localization under production load.
• Multi-region network design experience a plus.