RadixArk is an infrastructure-first company focused on building world-class open systems for AI inference and training. They are seeking a Member of Technical Staff -- Kernel / Compiler ...
Radixark
60 Radixark Jobs Hiring Near You
RadixArk is an infrastructure-first company focused on building world-class open systems for AI inference and training. They are seeking a Member of Technical Staff -- Kernel / Compiler ...
RadixArk is looking for a Member of Technical Staff (Cluster / Platform) to architect and scale the core compute platform that powers frontier-level AI training and inference. The role involves ...
RadixArk is looking for a Member of Technical Staff (Cluster / Platform) to architect and scale the core compute platform that powers frontier-level AI training and inference. The role involves ...
RadixArk is an infrastructure-first company focused on building world-class open systems for AI inference and training. They are seeking a TPU Systems Engineer to develop high-performance systems ...
RadixArk is an infrastructure-first company focused on building world-class open systems for AI inference and training. They are seeking a TPU Systems Engineer to develop high-performance systems ...
Talent Operations
Palo Alto, CA · On-site
$118K - $200K/yr
About RadixArk RadixArk is an infrastructure-first company built by engineers who've shipped production AI systems, created SGLang (30K+ GitHub stars, the fastest open LLM serving engine), and ...
Talent Operations
Palo Alto, CA · On-site
$118K - $200K/yr
About RadixArk RadixArk is an infrastructure-first company built by engineers who've shipped production AI systems, created SGLang (30K+ GitHub stars, the fastest open LLM serving engine), and ...
Software Engineer, Product
Palo Alto, CA · On-site
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 ...
Software Engineer, Product
Palo Alto, CA · On-site
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 ...
Business Development
Palo Alto, CA · On-site
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 ...
Business Development
Palo Alto, CA · On-site
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 ...
Member of Technical Staff - Developer Technology
Palo Alto, CA · On-site
$200K - $400K/yr
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 ...
Member of Technical Staff - Developer Technology
Palo Alto, CA · On-site
$200K - $400K/yr
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 ...
Product Manager
Palo Alto, CA · On-site
About RadixArk RadixArk is an infrastructure-first company built by engineers who've shipped production AI systems, created SGLang (30K+ GitHub stars, the fastest open LLM serving engine), and ...
Product Manager
Palo Alto, CA · On-site
About RadixArk RadixArk is an infrastructure-first company built by engineers who've shipped production AI systems, created SGLang (30K+ GitHub stars, the fastest open LLM serving engine), and ...
RadixArk is an infrastructure-first company focused on democratizing frontier-level AI infrastructure. They are seeking a TPU Systems Engineer to build high-performance inference and training systems ...
RadixArk is an infrastructure-first company focused on democratizing frontier-level AI infrastructure. They are seeking a TPU Systems Engineer to build high-performance inference and training systems ...
RadixArk is an infrastructure-first company focused on building world-class open systems for AI inference and training. They are seeking a Member of Technical Staff -- CI Engineer to own and ...
RadixArk is an infrastructure-first company focused on building world-class open systems for AI inference and training. They are seeking a Member of Technical Staff -- CI Engineer to own and ...
RadixArk is an infrastructure-first company seeking a Member of Technical Staff -- Diffusion Model to advance generative modeling. The role involves working on cutting-edge diffusion and flow-based ...
RadixArk is an infrastructure-first company seeking a Member of Technical Staff -- Diffusion Model to advance generative modeling. The role involves working on cutting-edge diffusion and flow-based ...
RadixArk is an infrastructure-first company focused on building high-performance AI systems. They are seeking a TPU Systems Engineer to develop and optimize inference and training systems using JAX ...
RadixArk is an infrastructure-first company focused on building high-performance AI systems. They are seeking a TPU Systems Engineer to develop and optimize inference and training systems using JAX ...
RadixArk is seeking a Member of Technical Staff -- Diffusion Model to advance the frontier of generative modeling. You will work on cutting-edge diffusion and flow-based models for image, video, and ...
RadixArk is seeking a Member of Technical Staff -- Diffusion Model to advance the frontier of generative modeling. You will work on cutting-edge diffusion and flow-based models for image, video, and ...
Talent Operations
Palo Alto, CA · On-site
$118K - $200K/yr
About RadixArk RadixArk is an infrastructure-first company built by engineers who've shipped production AI systems, created SGLang (30K+ GitHub stars, the fastest open LLM serving engine), and ...
Talent Operations
Palo Alto, CA · On-site
$118K - $200K/yr
About RadixArk RadixArk is an infrastructure-first company built by engineers who've shipped production AI systems, created SGLang (30K+ GitHub stars, the fastest open LLM serving engine), and ...
Product Manager
Palo Alto, CA · On-site
About RadixArk RadixArk is an infrastructure-first company built by engineers who've shipped production AI systems, created SGLang (30K+ GitHub stars, the fastest open LLM serving engine), and ...
Product Manager
Palo Alto, CA · On-site
About RadixArk RadixArk is an infrastructure-first company built by engineers who've shipped production AI systems, created SGLang (30K+ GitHub stars, the fastest open LLM serving engine), and ...
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 ...
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 ...
RadixArk is an infrastructure-first company focused on building world-class open systems for AI inference and training. They are seeking a Member of Technical Staff -- Kernel / Compiler ...
RadixArk is an infrastructure-first company focused on building world-class open systems for AI inference and training. They are seeking a Member of Technical Staff -- Kernel / Compiler ...
Product Manager
Palo Alto, CA · On-site
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 ...
Product Manager
Palo Alto, CA · On-site
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 ...
Product Manager
Palo Alto, CA · On-site
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 ...
Product Manager
Palo Alto, CA · On-site
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 ...
Technical Program Manager
Palo Alto, CA · On-site
$151K - $196K/yr
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 ...
Technical Program Manager
Palo Alto, CA · On-site
$151K - $196K/yr
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 ...
Radixark Jobs Information
Full-time
Re-posted 19 days ago
Job description
Job Summary:
RadixArk is an infrastructure-first company focused on building world-class open systems for AI inference and training. They are seeking a Member of Technical Staff — Kernel / Compiler / Communication to enhance the performance of frontier AI systems through low-level optimization of kernels, runtimes, and communication libraries across large GPU clusters.
Responsibilities:
• Design and implement high-performance kernels for AI workloads
• Optimize compiler and runtime stacks for ML systems
• Improve communication efficiency across large GPU clusters
• Reduce latency and increase throughput for distributed workloads
• Profile and eliminate system bottlenecks across the stack
• Collaborate with training and inference teams on performance optimization
• Develop tooling for profiling and performance analysis
• Contribute to long-term architecture for performance-critical systems
• Push the limits of hardware–software co-design
Qualifications:
Required:
• 5+ years of experience in systems, compiler, or performance engineering
• Strong expertise in CUDA or accelerator programming
• Deep understanding of GPU architecture and memory hierarchy
• Experience writing or optimizing high-performance kernels
• Strong background in compilers, runtimes, or code generation
• Experience with distributed communication libraries (NCCL, MPI, RCCL, etc.)
• Solid knowledge of networking and interconnect technologies
• Proficiency in C++ and Python
• Strong debugging and profiling skills at system level
Preferred:
• Experience with Triton, TVM, XLA, or MLIR
• Experience building compiler passes or IR transformations
• Familiarity with NVLink, InfiniBand, or RDMA
• Experience optimizing collective communication at scale
• Background in HPC or performance-critical systems
• Contributions to kernel/compiler/ML systems open source
• Experience scaling workloads to 1000+ GPUs
• Experience with mixed-precision or quantized kernels
Company:
RadixArk focuses on developing infrastructure for AI inference and training systems. Founded in 2025, the company is headquartered in San Francisco, USA, with a team of 11-50 employees. The company is currently Early Stage.
RadixArk is an infrastructure-first company focused on building world-class open systems for AI inference and training. They are seeking a Member of Technical Staff — Kernel / Compiler / Communication to enhance the performance of frontier AI systems through low-level optimization of kernels, runtimes, and communication libraries across large GPU clusters.
Responsibilities:
• Design and implement high-performance kernels for AI workloads
• Optimize compiler and runtime stacks for ML systems
• Improve communication efficiency across large GPU clusters
• Reduce latency and increase throughput for distributed workloads
• Profile and eliminate system bottlenecks across the stack
• Collaborate with training and inference teams on performance optimization
• Develop tooling for profiling and performance analysis
• Contribute to long-term architecture for performance-critical systems
• Push the limits of hardware–software co-design
Qualifications:
Required:
• 5+ years of experience in systems, compiler, or performance engineering
• Strong expertise in CUDA or accelerator programming
• Deep understanding of GPU architecture and memory hierarchy
• Experience writing or optimizing high-performance kernels
• Strong background in compilers, runtimes, or code generation
• Experience with distributed communication libraries (NCCL, MPI, RCCL, etc.)
• Solid knowledge of networking and interconnect technologies
• Proficiency in C++ and Python
• Strong debugging and profiling skills at system level
Preferred:
• Experience with Triton, TVM, XLA, or MLIR
• Experience building compiler passes or IR transformations
• Familiarity with NVLink, InfiniBand, or RDMA
• Experience optimizing collective communication at scale
• Background in HPC or performance-critical systems
• Contributions to kernel/compiler/ML systems open source
• Experience scaling workloads to 1000+ GPUs
• Experience with mixed-precision or quantized kernels
Company:
RadixArk focuses on developing infrastructure for AI inference and training systems. Founded in 2025, the company is headquartered in San Francisco, USA, with a team of 11-50 employees. The company is currently Early Stage.