[Hiring] Senior Network Engineer @Lightning AI

Role Description

We are seeking an experienced Senior Network Engineer (InfiniBand / UFM) to design, deploy, automate, and operate next-generation AI Factory networking infrastructure supporting large-scale GPU clusters. This role is responsible for building and maintaining high-performance NVIDIA Quantum InfiniBand fabrics that power AI training and inference environments utilizing NVIDIA UFM, NCCL, RoCEv2, and modern data center technologies.

The ideal candidate has deep expertise in:

• InfiniBand networking
• NVIDIA Unified Fabric Manager (UFM)
• Large-scale GPU deployments
• Linux networking
• Automation
• Troubleshooting distributed AI workloads

This role will shape how Lightning scales from tens of thousands of GPUs to significantly beyond — ensuring deterministic performance, predictable scaling, and enterprise-grade reliability. If you want to architect infrastructure that powers frontier AI research, this is the role for you.

This role may be fully remote within the U.S., or hybrid out of one of our office hubs (NYC, SF, Seattle, or London), with occasional team and company offsites. We are not able to provide visa sponsorship for this position at this time.

Qualifications

• 7+ years of experience in large-scale data center networking
• Experience deploying, operating, and troubleshooting InfiniBand environments
• Strong understanding of Layer 2 and Layer 3 networking, including BGP, EVPN, VXLAN, and spine-leaf architectures
• Strong Linux administration experience
• Experience with network automation using Python, Ansible, Terraform, or similar tools
• Experience with network troubleshooting, observability, and telemetry tooling
• Excellent troubleshooting, documentation, and communication skills

Requirements

• Experience with Netris, Terraform, or similar infrastructure tooling
• Experience with multi-region backbone design
• Exposure to bare-metal provisioning systems
• Experience operating HPC, GPU-dense, or other large-scale infrastructure environments
• Experience working in high-growth infrastructure startups

Benefits

• Comprehensive Health Coverage: Medical, dental, and vision coverage for employees and eligible dependents
• Meaningful Equity: RSUs that give employees a stake in the company's long-term success
• Retirement Savings: 401(k) matching (U.S.) and pension contributions (U.K.)
• Flexible Time Off: Unlimited PTO, company holidays, and floating holidays to support work-life balance
• Company-Wide Winter Break: Two weeks of company closure each winter to disconnect and recharge
• Paid Parental & Family Leave: Paid leave to support you and your family through life's important moments
• Professional Development: Annual learning and development allowance to support your professional growth
• Wellness Benefits: Wellness and work-from-home stipends to support your physical and mental well-being
• Sabbatical Program: Four weeks of paid sabbatical leave after four years of service
• Flexible Work: Flexible schedules and a hybrid work model for our office-based teams
• In-Office Meals: Complimentary meals at our office hubs