[Hiring] Senior Network Engineer @Lightning AI

Role Description

Lightning AI is seeking a Senior Network Engineer with hands-on Cumulus Linux expertise to build and scale the network backbone behind our AI infrastructure platform. You’ll play a critical role in designing highly reliable, automated data center networks that support some of the most demanding AI workloads in the world.

• Design and deploy scalable spine/leaf network architectures for AI data centers
• Engineer high-performance Ethernet fabrics supporting GPU clusters and AI workloads
• Build and maintain EVPN/VXLAN, BGP, and high-speed routing environments
• Optimize east-west traffic flows for AI training and inference operations
• Support RoCE/RDMA networking and low-latency transport technologies
• Support backbone, DCI, WAN, and edge connectivity solutions
• Collaborate with compute, storage, AI platform, and operations teams to deliver integrated infrastructure solutions
• Develop automation and Infrastructure-as-Code (IaC) solutions for network provisioning and operations
• Troubleshoot complex network, performance, and congestion issues across distributed environments
• Improve network observability, telemetry, and operational visibility

Qualifications

• Experience with Cumulus NOS
• 5+ years of experience in large-scale data center networking
• Experience in spine-leaf architectures and L3 fabrics
• Experience with BGP, EVPN, VXLAN
• Experience operating high-performance computing (HPC) or GPU-dense environments
• Experience designing networks for hyperscalers, neoclouds, or high-scale SaaS infrastructure
• Experience in automation with (Python, Ansible, Terraform, or similar)
• Experience with network observability tooling and telemetry pipelines
• Proven ability to design systems that scale to thousands of nodes
• Strong documentation and communication skills

Requirements

• Familiarity with NVIDIA networking (Spectrum, Quantum, BlueField, etc.)
• Familiarity with RDMA, RoCE, or InfiniBand fabrics
• Experience with multi-region backbone design
• Exposure to bare-metal provisioning systems
• Experience working in high-growth infrastructure startups

Benefits

• Comprehensive medical, dental and vision coverage (U.S.); Private medical and dental insurance (U.K.)
• Retirement and financial wellness support (U.S.); Pension contribution (U.K.)
• Generous paid time off, plus holidays
• Paid parental leave
• Professional development support
• Wellness and work-from-home stipends
• Flexible work environment