Senior Principal Network Engineer

Stack

Responsibilities

• ▹Define ultra-high-bandwidth, non-blocking AI network fabrics (Clos spine-leaf-super-spine architectures) for large-scale distributed AI workloads
• ▹Optimize lossless Ethernet fabrics using congestion control mechanisms (PFC, ECN, DCQCN) for RDMA/RoCEv2 communication
• ▹Lead NetDevOps initiatives and develop automation for provisioning, configuration management and remediation
• ▹Design and deploy high-resolution telemetry pipelines to monitor network health and detect microbursts
• ▹Support modeling, deployment, configuration and monitoring of data center network fabrics
• ▹Collaborate cross-functionally with hardware engineers, AI researchers and data center operations
• ▹Provide technical leadership and mentorship to network engineers, establishing best practices
• ▹Contribute to the long-term networking strategy and roadmap for Graphcore's AI infrastructure
• ▹Research and evaluate next-generation high-speed networking technologies and vendor solutions

Requirements

• ▹BS or MS or equivalent experience in Computer Science, Electrical Engineering, Network Engineering or related field
• ▹12+ years of progressive network engineering experience, including at least 3 years in hyperscale or HPC data center environments
• ▹Expert-level knowledge of data center routing and switching protocols (BGP, OSPF, EVPN-VXLAN)
• ▹Strong operational understanding of RDMA networking technologies (RoCEv2 or InfiniBand)
• ▹Hands-on experience with modern merchant silicon platforms and NOS platforms (Arista EOS, Cisco NX-OS, SONiC)
• ▹Experience deploying 400G/800G optics and large-scale fabric architectures
• ▹Proficiency in automation and scripting (Python, Go, Bash)
• ▹Strong collaboration and communication skills across cross-functional engineering teams

Nice to have

• ▹Experience operating large-scale AI or GPU clusters
• ▹Familiarity with network telemetry frameworks and streaming analytics
• ▹Experience implementing NetDevOps workflows and infrastructure automation pipelines
• ▹Experience influencing vendor roadmaps or evaluating next-generation networking technologies

Soft skills

What we offer

• ▹Competitive salary
• ▹Medical, dental and vision coverage
• ▹FSA/HSA health savings accounts
• ▹Disability and life insurance
• ▹401(k) retirement plan
• ▹Commuter benefits
• ▹Wellness services and Employee Assistance Programme (EAP)

About the company

Graphcore is one of the world's leading innovators in Artificial Intelligence compute, developing hardware, software and systems infrastructure, part of the SoftBank Group.