Full Stack Engineer

RadixArk is building the infrastructure layer for frontier AI systems, and they are seeking a Full Stack Engineer to develop high-performance web applications for AI infrastructure tooling. The role involves designing scalable backend systems and architecting APIs that serve enterprise and research customers.

Responsibilities:

• Design and implement high-performance web applications for AI infrastructure tooling
• Build scalable backend systems that interact with distributed inference and training services
• Architect APIs and service layers that serve enterprise and research customers
• Develop observability dashboards, experiment tracking UIs, and performance analytics tools
• Optimize real-time streaming interfaces for model inference workflows
• Work closely with ML engineers and infra teams to expose complex systems through intuitive product surfaces
• Lead architectural decisions for frontend-backend communication, state management, and performance tuning
• Ship production-grade features in fast iteration cycles