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Product Manager
Product Manager at RadixArk in Palo Alto defining and driving the AI infrastructure product roadmap, collaborating with engineering teams, and engaging with developer communities to shape open AI systems.
Product 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…
Member of Technical Staff — Cluster Infrastructure & Supercomputing
Designs and scales high-performance GPU/TPU clusters for AI training and inference, focusing on distributed systems, scheduling, and performance optimization.
Business Development
About the Role We're looking for a Head of 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…
Member of Technical Staff — Inference-TPU
Builds and optimizes high-performance ML systems for TPU hardware using JAX, XLA, and Pallas, focusing on inference/training workloads and compiler/runtime tuning.
Member of Technical Staff — Inference-Core Engine
Builds and optimizes large-scale AI inference systems for frontier models, focusing on performance, latency, and cost across thousands of GPUs.
Research Fellow (Machine Learning) 1
Research Fellow develops hybrid physics-AI models for weather forecasting using satellite, radar, and sensor data with PyTorch and distributed training.
AI Infrastructure Engineer
Design and operate GPU clusters, distributed training frameworks, and scheduling systems to power large-scale AI workloads with a focus on reliability, efficiency, and cost control.
Generative AI Engineer
Designs and runs fine-tuning workflows for large language models using supervised, preference-based, and reinforcement learning approaches, while building robust training pipelines and evaluation frameworks.
Director, Data Science
Lead Chewy’s Ads Data Science team to build AI-powered ranking, bidding, and optimization systems for onsite and offsite ads, shaping the future of retail media with LLMs and generative AI.
Machine Learning Research Engineer
Design and ship advanced ML systems that solve business problems, blending research with production engineering using PyTorch/JAX and modern AI techniques.
Applied AI Scientist
Build and deploy AI models that turn satellite and geospatial data into actionable insights using vision-language models, multimodal systems, and reasoning models in Python with PyTorch/TensorFlow.
Applied AI Researcher – Foundation Models
Research and develop multilingual large language models from scratch, including data curation, model architecture, and distributed training on GPU clusters.
Member of Technical Staff — Training
Builds and scales distributed training infrastructure for large AI models, optimizing performance and reliability across thousands of GPUs using systems like Megatron-LM and SGLang.
Member of Technical Staff — Performance
Performance Engineer at RadixArk in Palo Alto optimizes LLM inference and training systems for latency, throughput, and cost efficiency across production workloads using SGLang, Miles, and GPU/TPU infrastructure.
Member of Technical Staff — Product
Builds and maintains developer-facing tools (APIs, SDKs, dashboards) on top of AI inference/training infrastructure like SGLang and Miles, collaborating with product and research teams to create intuitive interfaces.
Member of Technical Staff — Backend/API Platform
Build and maintain the backend and API platform powering SGLang and Miles, including REST/gRPC services, authentication, multi-tenancy, and monitoring for AI infrastructure.
Member of Technical Staff — Developer Experience
Builds and engages the technical community around SGLang and Miles by creating content, speaking at events, and collaborating with developers to optimize AI infrastructure.
Member of Technical Staff — Developer Technology
Optimize and accelerate LLM inference and training systems like SGLang and Miles by profiling GPU performance, writing custom kernels, and enabling new models on modern hardware.
Senior Solution Engineer – GPU & AI Infrastructure
Designs and deploys GPU-powered AI and HPC infrastructure on Civo’s cloud platform, optimizing Kubernetes and bare-metal performance for AI workloads.