Senior Cluster Networking Architect for GPU Superclusters

NVIDIA; Durham (NC); On-site; USD 184,000 - 357,000; Full time

Benefits offered by this job

Equity

Benefits

Job summary

NVIDIA is seeking a senior networking engineer to lead the network architecture of its GPU superclusters. The role covers multi-thousand-node Kubernetes networking, CNI design, and scalable overlay networks across clouds, with strong emphasis on Calico, Tailscale, WireGuard, and Envoy-based gateways.

You will build scale-test environments, diagnose complex distributed network issues, and collaborate with cloud providers to extend clusters while delivering robust, maintainable networking at scale.

Qualifications

• BS/MS in Computer Science, Electrical Engineering or a related field, or equivalent experience.
• 6+ years of professional experience in systems, network or infrastructure software engineering.
• Deep command of Kubernetes networking architecture and CNI standards, with production experience operating Calico strongly preferred.
• Proficiency designing and maintaining modern mesh and VPN networking topologies - Tailscale, WireGuard or equivalent.
• Strong Linux networking fundamentals: routing, netfilter and iptables/nftables, packet marking, network namespaces, and how these interact with container runtimes.
• Demonstrated ability to debug distributed network problems at scale - packet capture, tracing, and correlating behaviour across many hosts to find a single root cause.
• Proficiency in Go, Python, C or a comparable systems language.
• Clear written and verbal communication, and the ability to work effectively with engineers across multiple time zones.

Responsibilities

• Own and evolve the Kubernetes networking architecture for GPU clusters running at multi-thousand-node scale
• Design, operate and scale the overlay network - CNI, mesh and VPN topologies (Tailscale, WireGuard), and the gateways that connect control and data planes
• Design, operate and scale the L7 gateways/load balancers/tunnels (Envoy, Cloudflare)
• Find and eliminate scale ceilings: packet loss under load, control-plane saturation, IP address management exhaustion, and the failure modes that only appear above a few thousand nodes
• Build the scale-test environments and validation suites that let us catch networking regressions before they reach production, rather than during a training run
• Diagnose hard, ambiguous problems across the stack - where a symptom in Slurm or a training job traces back to a mark collision, a stale route, or a saturated tunnel
• Partner with cloud and neocloud providers on network topology, requirements and capabilities as we bring up new clusters
• Provide senior technical judgement to a distributed team, and depth in the Custer Networking domain.

Skills

Kubernetes networking

Calico production experience

Tailscale

WireGuard

Linux networking fundamentals

Distributed debugging

Go

Python

C

Communication

Education

BS/MS in Computer Science, Electrical Engineering or related field

Tools

Envoy

Cloudflare

Kubernetes

Calico

Tailscale

WireGuard

Job description

NVIDIA is seeking a senior networking engineer to lead the network architecture of its GPU superclusters. The role covers multi-thousand-node Kubernetes networking, CNI design, and scalable overlay networks across clouds, with strong emphasis on Calico, Tailscale, WireGuard, and Envoy-based gateways.

You will build scale-test environments, diagnose complex distributed network issues, and collaborate with cloud providers to extend clusters while delivering robust, maintainable networking at scale.