RadixArk
Open positions
Member of Technical Staff — Security
About the Role RadixArk is looking for a Member of Technical Staff — Security to champion both our internal security posture and help us prepare for vendor audits and compliance requirements. As our first dedicated…
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…
Member of Technical Staff — Product
About the Role RadixArk is seeking experienced product-focused engineers to join our team in building the developer-facing surfaces of our inference and training infrastructure. As a Member of Technical Staff —…
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-Multimodal & Diffusion
About the Role RadixArk is seeking a Member of Technical Staff — Inference-Multimodal & Diffusion to advance the frontier of generative modeling. You will work on cutting-edge diffusion and flow-based models for image,…
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,…
Member of Technical Staff — Cluster Infrastructure & Supercomputing
About the Role RadixArk is looking for a Member of Technical Staff Cluster Infrastructure to architect and scale the core compute platform that powers frontier-level AI training and inference. You will design and…
Member of Technical Staff — Inference-TPU
About the Role RadixArk is looking for a Member of Technical Staff — TPU Systems to build high-performance inference and training systems using JAX, XLA, and Pallas. You'll push model workloads to their limits on TPU…