Senior Network Engineer

Lightning AI builds an end-to-end platform for developing, training, and deploying AI systems, including large-scale compute infrastructure. The company is seeking a Senior Network Engineer to design, automate, and scale highly reliable data center networks supporting GPU clusters, AI workloads, and distributed infrastructure.

Responsibilities:

• 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
• You have hands-on experience working with SONiC and Junos
• Experience with cloud networking technologies including VPC’s, NFV, Direct Connect, Cloud Connect
• You enjoy working with a small group of friendly, highly motivated, high-execution colleagues
• You’re comfortable with a high degree of autonomy, can independently prioritize your work and understand how it maps to the overall needs and goals of the company
• You’re knowledgeable in your domain but also enjoy wearing multiple hats and venturing outside of your comfort zone when the need arises
• You value the ability to write well and understand the importance of good documentation

Requirements:

• 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
• 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