Design Jobs at RadixArk

RadixArk is an infrastructure-first deep-tech company that builds large-scale inference and training systems for the AI community. Its mission is to make frontier-level AI infrastructure open and accessible. The company develops SGLang, an open engine for serving AI models, and Miles, a large-scale reinforcement learning (RL) framework. RadixArk was founded by AI infrastructure engineers with experience at xAI and NVIDIA.

RadixArk is also hiring in engineering (13), product (2), data and AI (1), marketing and growth (1), operations (1) and sales and business development (1).

Its roles are in Palo Alto, CA, US (19).

You cover research, interface work and the brand, sometimes in the same week. No design system is waiting for you, so you build one while shipping. At a large company you would hand off a spec, and here you sit with the engineer building it.