AI Cluster Architect at Vultr

Compensation

$165,000 – $185,000/yr

Setup: Remote
Location: Oregon
Type: Full-time
Posted: Jan 19, 2026

Description

Vultr is seeking an AI Cluster Architect to design and optimize large-scale GPU cluster architectures within strict power and infrastructure limitations. The role involves determining optimal GPU counts, evaluating various networking designs, and ensuring efficient utilization of resources while adhering to facility constraints. The architect will focus on power-aware design, considering interactions between hardware components and user requirements.

Required Skills

GPU Cluster Architecture
Power-Aware Design
Heterogeneous Environments
Networking Fabric Designs
InfiniBand
RoCE
SpectrumX

Additional Information

Required Previous Experiences: 7+ years designing or building large-scale HPC, AI, or hyperscale GPU clusters.
Preferred Qualifications: Expert understanding of GPU and accelerator system design, including node topology, PCIe/NVLink/NVSwitch/ROCm, and NIC-to-GPU affinity considerations.
Strong familiarity with InfiniBand, RoCE, and SpectrumX networking, including multi-tier, multi-plane, Clos/dragonfly variants, and large-radix switch design.
Demonstrated experience modeling power draw and thermal characteristics of servers, GPUs, NICs, switches, optics, and storage systems.
Ability to design networks that maintain full non-blocking performance or intentionally introduce over/under-subscription while understanding impacts on workload performance.
Proven ability to gather and analyze vendor SKU-level specifications and incorporate them into scalable cluster architectures.
Experience balancing customer-driven requirements for compute, storage, and service density in combination with overall GPU count.
Strong documentation, communication, and cross-functional collaboration skills.