Member of Technical Staff — Cluster / Platform

RadixArk is an infrastructure-first company focused on building world-class open systems for AI training and inference. They are seeking a Member of Technical Staff to design and operate high-performance GPU/TPU clusters and develop resource management systems to enhance AI workloads.

Responsibilities:

• Architect and scale large AI compute clusters for training and inference
• Design cluster management, scheduling, and resource allocation systems
• Optimize performance, utilization, and reliability of GPU/TPU clusters
• Improve fault tolerance and system resilience at scale
• Drive observability, monitoring, and performance profiling for cluster infrastructure
• Collaborate with ML and systems engineers to support frontier AI workloads
• Lead capacity planning and infrastructure scaling strategies
• Build internal platforms and tooling to improve developer productivity
• Document architecture, operational practices, and reliability strategies
• Contribute to long-term platform vision and technical direction