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Member of Technical Staff — Training

RadixArk is seeking a Member of Technical Staff — Training to build and scale the systems that train frontier AI models. The role involves working on large-scale distributed training infrastructure for LLMs and generative models, focusing on efficiency and reliability across thousands of GPUs.

AI Infra Resident

RadixArk is launching a full-time, paid, 1-year residency program for aspiring AI infrastructure engineers. The role involves rotating across various aspects of AI infrastructure, working on real production systems, and contributing to significant projects alongside senior engineers.

AI Infra Resident (1-Year Program)

Member of Technical Staff — Kernel / Compiler / Communication

RadixArk is an infrastructure-first company focused on building advanced AI systems. They are seeking a Member of Technical Staff to design and optimize high-performance kernels and communication libraries for AI workloads, directly impacting the efficiency of next-generation AI systems.

Member of Technical Staff — Diffusion Model

RadixArk is seeking a Member of Technical Staff — Diffusion Model to advance the frontier of generative modeling. The role involves working on cutting-edge diffusion and flow-based models for image, video, and multimodal generation, focusing on model quality, efficiency, and scalability.

Solutions Account Executive

RadixArk is an infrastructure-first company focused on democratizing AI infrastructure, and they are seeking a Solutions Account Executive. The role involves owning commercial relationships, running full sales cycles, and partnering with engineering to translate customer requirements into actionable insights for technical buyers.

Solutions Architect

Full Stack Engineer

RadixArk is building the infrastructure layer for frontier AI systems, and they are seeking a Full Stack Engineer to develop foundational tools for AI applications. The role involves designing high-performance web applications, building scalable backend systems, and leading architectural decisions for frontend-backend communication.

Product Manager

RadixArk is an infrastructure-first company focused on democratizing AI infrastructure. They are seeking a Product Manager to define and drive the product roadmap for inference and training infrastructure, engage with users, and support Go-to-Market initiatives.

Head of People & Talent

RadixArk is an infrastructure-first company focused on democratizing frontier-level AI infrastructure. They are seeking a Head of People & Talent to build their People and Recruiting function, overseeing the full recruiting lifecycle and establishing HR operations, compensation, benefits, and people analytics as the company grows.

Member of Technical Staff — Inference

RadixArk is an infrastructure-first company focused on democratizing frontier-level AI infrastructure. They are seeking a Member of Technical Staff — Inference to design and optimize large-scale AI inference systems, improving performance and reliability across thousands of GPUs.

Software Engineer, Product

RadixArk is an infrastructure-first company focused on building advanced AI systems and products. They are seeking a Software Engineer, Product to collaborate with cross-functional teams and create developer-facing products that enhance the usability of their AI infrastructure.