Principal Network Engineer

Stack

Responsibilities

• ▹Maintain all network fabrics and topologies operating at peak performance on Graphcore data centers housing AI server platforms
• ▹Collaborate closely with the Network architecture team through all phases of the design and development lifecycle — from concept to deployment
• ▹Provide primary support of deployed internal fabrics in Graphcore's AI Datacenters
• ▹Serve as direct escalation for Hardware, Link, and Performance issues on network fabrics
• ▹Provide escalation support for customer network fabrics
• ▹Triage day-to-day network topology issues (scale-up, scale-out, and front-end networks) 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 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 networks — experience with congestion control and lossless Ethernet technologies including PFC, ECN and DCQCN
• ▹Experience with high-bandwidth network infrastructure including operating 400G and 800G network fabrics and physical-layer challenges at these speeds, including specific optical transceivers
• ▹Experience sustaining non-blocking, multi-tier CLOS networks (Spine / Leaf / Super-Spine) optimized for high-density GPU clusters
• ▹Extensive troubleshooting experience for data center routing protocols such as BGP and OSPF as well as VXLAN implementations
• ▹Cross-functional collaboration with network architects, systems hardware engineers, AI software engineers, and Datacenter infrastructure teams

Nice to have

• ▹Deep hands-on NetDevOps experience automating tasks with tools such as Terraform or Ansible to manage network configurations and state
• ▹Strong scripting skills such as Python, Go, or JSON to build custom automation, interact with APIs, and develop internal network tools
• ▹Deep hands-on experience with modern, high-performance hardware from providers such as Broadcom, Arista, Cisco, or Pensando
• ▹Knowledge of Advanced Network Telemetry beyond traditional SNMP, including gNMI, sFlow, NetFlow, Redfish, and Prometheus to characterize and detect transient congestion events, micro-bursts, or defective network hardware

Soft skills

What we offer

• ▹Competitive salary
• ▹Flexible working
• ▹Medical, dental and vision coverage
• ▹FSAs and HSAs
• ▹Disability and life insurance
• ▹401(k) retirement plan
• ▹Commuter benefits, wellness services, EAP

About the company

Graphcore is a globally recognized leader in Artificial Intelligence computing systems, part of the SoftBank Group, opening a new AI Engineering Campus in Austin to help build the future of AI computing.