Member of Technical Staff — Cluster / Platform

RadixArk is an infrastructure-first company focused on democratizing frontier-level AI infrastructure. They are seeking a Member of Technical Staff to architect and scale core compute platforms for AI training and inference, focusing on systems engineering across cluster architecture, networking, and performance optimization.

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