Staff Network Engineer (AI Fabric, Datacenter and Edge Networking) - Radian Arc

📋 Description

• High-impact staff networking role for AI fabric, datacenter and edge networking.
• Architect, deploy, and operate GPU networking fabrics for distributed AI workloads (RoCE, RDMA
• Lead AI performance optimization for east-west traffic, latency, throughput, and reliability.
• Own Layer 2/3 datacenter networking with BGP, ECMP, EVPN/VXLAN, VLAN/VRF, OVS/OVN, Linux networking.
• Design north-south connectivity, WAF protections, TLS termination, DDoS mitigation, gateway infra.
• Oversee inter-datacenter networking, private connectivity, DWDM, inter-site BGP, redundancy.

🎯 Requirements

• Network engineering: large-scale datacenter networks, BGP/OSPF/ECMP, EVPN/VXLAN.
• AI networking: GPU fabrics, RoCE/RDMA, high-performance interconnects.
• GPU communication: NCCL patterns (all-reduce, all-gather, etc.) and network implications.
• RoCE optimization: PFC/ECN, NCCL stalls, RDMA congestion, fabric hotspots.
• Production infrastructure: high-speed Ethernet, NVIDIA/Mellanox hardware, optics.
• Systems troubleshooting: cross-layer issues across hardware, firmware, Linux, distributed apps.

🎁 Benefits

• Attractive compensation aligned with expertise.
• Full-time or contract engagement.
• 100% remote work within Europe.
• Flexible international environment with autonomy and collaboration.
• Opportunity to shape networking for AI and cloud infra.
• Technical ownership as first dedicated networking specialist.