RadixArk
Open positions
Member of Technical Staff — Inference-Multi-Hardware
About the Role RadixArk is seeking a Member of Technical Staff - Inference-Multi-Hardware to push the limits of performance for frontier AI systems. Most performance engineering assumes a single vendor's stack. This…
Member of Technical Staff — Developer Experience
About the Role RadixArk is seeking a Developer Advocate to build and engage our technical community around SGLang, Miles, and our open source infrastructure. SGLang already has 30K+ GitHub stars and serves billions of…
Member of Technical Staff — Developer Technology
About the Role RadixArk is seeking a Member of Technical Staff, Developer Technology (DevTech) to make LLM inference and training dramatically faster, cheaper, and more accessible on modern GPU hardware. Our systems…
Member of Technical Staff — Performance
About the Role RadixArk is hiring a Member of Technical Staff — Performance in Palo Alto, CA — someone who can push LLM inference and training systems to the limit across real production workloads. You’ll work on the…
Technical Program Manager
About the Role As a Technical Program Manager at RadixArk, you'll drive the execution of complex, cross-functional programs across our inference and training infrastructure. You'll partner closely with Product…
Member of Technical Staff — Reliability-CI Infrastructure
About the Role RadixArk is hiring a Member of Technical Staff — CI / Infrastructure to own the infrastructure that keeps SGLang moving. Our CI system runs 300+ GPU tests across NVIDIA, AMD, Intel, and Ascend hardware…
Member of Technical Staff — Inference-Kernel, Compiler & Communication
About the Role RadixArk is seeking a Member of Technical Staff — Kernel / Compiler / Communication to push the limits of performance for frontier AI systems. You will work at the lowest layers of the stack — kernels,…
Member of Technical Staff — Training
About the Role As a Member of Technical Staff, Training, you will design, build, and operate the distributed systems behind large-scale model post-training — spanning training, inference, and orchestration, with a…
Member of Technical Staff — Inference-Core Engine
About the Role RadixArk is seeking a Member of Technical Staff — Inference to push the limits of large-scale AI inference. You will work on the core systems that serve frontier models at scale, optimizing performance,…