Senior Principal Frontend Network Engineer (AI Infrastructure)

Location: Houston, New York, San Francisco, or Seattle

Company

Nscale provides high-performance GPU cloud infrastructure for AI start-ups and enterprise customers.

What you will do

• Own the technical direction and operational strategy for front-end AI infrastructure networks.
• Design and evolve large-scale Ethernet leaf-spine and Clos fabrics using Arista and Nokia platforms.
• Serve as the senior escalation point for complex network incidents and lead systemic fixes.
• Improve fabric reliability, performance predictability, observability, capacity efficiency, and operational maturity.
• Define standards for routing, congestion management, firmware lifecycle, automation, and safe network changes across Nvidia Cumulus, Arista EOS, and Nokia platforms.
• Partner with SRE, compute, storage, and network architecture teams while mentoring senior and principal engineers.

Requirements

• 12+ years of network engineering experience focused on hyperscale data centre, cloud, or AI infrastructure networking.
• Expertise in large-scale Ethernet data centre fabrics, including leaf-spine and Clos topologies.
• Production experience with Nvidia Cumulus, Arista EOS, and/or Nokia platforms at scale.
• Strong knowledge of BGP, OSPF, ECMP, and EVPN-VXLAN.
• Experience with long-haul circuits, DCI, optical transport, dark fiber, carrier Ethernet, coherent optics, and ZR/ZR+.
• Background in hyperscale storage networking and debugging cross-layer issues involving hardware, optics, routing, and applications.

Nice to have

• Experience designing front-end networks for massive AI clusters, including inference, management, and storage tiers.
• Large-scale DCI, long-haul optical, or carrier network experience.
• Automation and tooling experience with Python, Ansible, validation frameworks, or telemetry pipelines.
• Experience influencing infrastructure strategy at significant scale.

Culture & Benefits

• Collaborative, supportive, and innovative work environment.
• Competitive package including base salary and equity, with reviews every 12 months.
• Progression plan supporting technical leadership, ownership, and professional growth.
• Benefits may include medical, dental, and vision coverage, flexible paid time off, parental leave, and retirement plan participation.