Principal Network Engineer

Graphcore is a globally recognized leader in Artificial Intelligence computing systems. The company designs advanced semiconductors and data centre hardware that provide the specialized processing power needed to drive AI innovation, while delivering the efficiency required to support its broader adoption.

As part of the SoftBank Group, Graphcore is a member of an elite family of companies responsible for some of the world’s most transformative technologies. We are opening a new AI Engineering Campus in Austin, which will play a central role in Graphcore's work building the future of AI computing.

Responsibilities

• Maintain all network fabrics and topologies operating at peak performance in Graphcore Data centers housing AI server platforms.
• Collaborate with the Network architecture team through all phases of design and development to ensure timely, high-quality, and stable high-speed network fabrics.
• Provide primary support for deployed internal fabrics in AI Datacenters.
• Serve as direct escalation for Hardware, Link, and Performance issues on network fabrics.
• Offer escalation support for customer network fabrics aligned to reference architecture.
• Troubleshoot day-to-day network topology issues of fabrics deployed in Graphcore Datacenters.

Requirements

• Bachelor’s, master’s degree or equivalent experience in Network Engineering/Security, Information Technology, Computer Science, Computer engineering, or a related field.
• 9+ years of hands-on experience in network engineering and 3+ years supporting networking on AI or Hyperscale Datacenters.
• Knowledge of Remote Direct Memory Access (RDMA) and its implementations, specifically ROCEv2 or InfiniBand.
• Knowledge of Lossless network – Experience with congestion control and lossless Ethernet technologies including PDF, ECN and DCQCN.
• Experience with high-bandwidth network infrastructure, including operating 400G and 800G network fabrics and tackling challenges at the physical layer for networks operating at these speeds.
• Experience sustaining non-blocking, multi-tier CLOS networks optimized for high-density GPU clusters.
• Extensive troubleshooting experience for data center routing protocols such as BGP and OSPF, as well as troubleshooting of VXLAN implementations.
• Cross-functional collaboration to optimize the full stack from the application layer down to the Network infrastructure.

Differentiators

• Deep hands-on experience with NetDevOps to automate tasks using tools such as Terraform or Ansible.
• Strong scripting skills in languages such as Python, Go, or JSON.
• Deep hands-on experience with modern, high-performance hardware from network switch and NIC providers.
• Knowledgeable in Advanced Network Telemetry, including telemetry protocols such as gNMI, Sflow, Netflow, Redfish, and Prometheus.