RadixArk
20 open jobs
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 security engineer, you'll lay the foundation for security
Talent Operations
About the Role We're looking for a hands-on Talent Operations Specialist to build and run the machinery behind talent and people ops as we scale. This isn't a traditional HR generalist role - it's for someone who treats recruiting and people ops like an engineering challenge: we
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 role assumes none. You'll bring up, optimize, and maintain
Applyto Member of Technical Staff — Inference-Multi-Hardware at RadixArk seen live 13h ago posted 62 days agoMember 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 tokens daily across leading AI companies and research labs,
Applyto Member of Technical Staff — Developer Experience at RadixArk seen live 13h ago posted 73 days agoMember 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 sit at the center of how modern AI is served and trained:
Applyto Member of Technical Staff — Developer Technology at RadixArk seen live 13h ago posted 73 days agoProduct Marketing Manager
About the Role RadixArk is seeking a Product Marketing Manager to own how SGLang, Miles, and our open source infrastructure are positioned and perceived across the market. SGLang already has 20K+ GitHub stars and serves billions of tokens daily across leading AI companies and
Business Development
About the Role We're looking for a Business Development to build the BD function at RadixArk from the ground up. The BD team is the institutional memory of this company — maintaining active relationships across every customer we've touched, detecting signals early, and ensuring
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 performance-critical path of SGLang, Miles, and the RadixArk
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 — Product, you will partner closely with our Product Managers,
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 Management, Research, and Engineering to turn ambitious technical
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 pools, gating every commit to one of the fastest-growing
Applyto Member of Technical Staff — Reliability-CI Infrastructure at RadixArk seen live 13h ago posted 167 days agoMember 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, runtimes, compilers, and communication libraries — to unlock
Applyto Member of Technical Staff — Inference-Kernel, Compiler & Communication at RadixArk seen live 13h ago posted 229 days agoMember 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 focus on the performance, correctness, scalability, and
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, video, and multimodal generation, pushing model quality,
Applyto Member of Technical Staff — Inference-Multimodal & Diffusion at RadixArk seen live 13h ago posted 229 days agoMember 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, latency, throughput, and cost across thousands of GPUs. This
Applyto Member of Technical Staff — Inference-Core Engine at RadixArk seen live 13h ago posted 229 days agoMember 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 operate highly reliable, high-performance GPU/TPU clusters, build
Applyto Member of Technical Staff — Cluster Infrastructure & Supercomputing at RadixArk seen live 13h ago posted 229 days agoProduct Manager
Key Responsibilities Product Strategy & Roadmap Define, prioritize, and drive the product roadmap for inference and training infrastructure. Stay ahead of AI trends, including new model architectures, hardware optimizations, and open-source developments. Balance qualitative
AI Infra Resident (1-Year Program)
About The Role RadixArk is launching a full-time, paid, 1-year residency program for aspiring AI infrastructure engineers. You'll rotate across inference, training, kernels, compilers, and cluster infrastructure, working on real production systems alongside senior engineers.
Member of Technical Staff — Backend/API Platform
About the Role RadixArk is looking for a Member of Technical Staff — Backend/API Platform Engineer to build the API layer, control plane, and platform services that power SGLang and Miles in production. You'll design and implement the REST/gRPC APIs, authentication systems,
Applyto Member of Technical Staff — Backend/API Platform at RadixArk seen live 13h ago posted 278 days agoMember 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 hardware, working on SGLang-JAX and other critical