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

📋 Description

• AI fabric architecture: Design, deploy, and operate GPU networking fabrics for distributed AI
• AI performance optimization: Analyze GPU communication, optimize east-west traffic, latency
• Datacenter networking: Own L2/3 with BGP, ECMP, EVPN/VXLAN, VLAN/VRF, OVS/OVN, Linux networking
• Security and edge connectivity: North-south connectivity, WAF protections, TLS termination, DDoS
• Inter-datacenter networking: Private connectivity, dark/metro-fiber rings, high-capacity WAN, DWDM
• End-to-end delivery: Lead architecture and deployment from lab validation to production rollout.

🎯 Requirements

• Network engineering experience: Large-scale datacenter networks, expert in BGP, OSPF, ECMP
• AI networking expertise: Designing high-performance GPU fabrics with RoCE/RDMA.
• GPU communication knowledge: NCCL patterns (all-reduce, all-gather, broadcast, reduce-scatter) and
• RoCE optimization: Tuning RoCE fabrics, PFC/ECN, diagnosing NCCL stalls, RDMA congestion, hotspots
• Production infrastructure: High-speed Ethernet, NVIDIA/Mellanox platforms, high-performance
• Systems troubleshooting: Cross-layer debugging across hardware, firmware, Linux/kernel networking

🎁 Benefits

• Attractive compensation package aligned with expertise.
• Full-time or contract engagement depending on arrangement.
• 100% remote work within Europe.
• Flexible, international environment emphasizing autonomy, collaboration, and trust.
• Opportunity to join a fast-growing AI/cloud/GPU infra scale-up.
• Significant technical ownership as first dedicated networking specialist.