RadixArk is an infrastructure-first company focused on building world-class open systems for AI infrastructure. They are seeking a Member of Technical Staff -- CI Engineer to own and architect the CI ...
Radixark
60 Radixark Jobs Hiring Near You
RadixArk is an infrastructure-first company focused on building world-class open systems for AI infrastructure. They are seeking a Member of Technical Staff -- CI Engineer to own and architect the CI ...
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 ...
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 ...
Member of Technical Staff - Inference-TPU
Palo Alto, CA · On-site
$200K - $400K/yr
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 ...
Member of Technical Staff - Inference-TPU
Palo Alto, CA · On-site
$200K - $400K/yr
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 ...
Member of Technical Staff - Training
Palo Alto, CA · On-site
$200K - $400K/yr
About RadixArk RadixArk builds open-source and production infrastructure for large language models and multimodal post-training. Our systems - including Miles , an enterprise-grade reinforcement ...
Member of Technical Staff - Training
Palo Alto, CA · On-site
$200K - $400K/yr
About RadixArk RadixArk builds open-source and production infrastructure for large language models and multimodal post-training. Our systems - including Miles , an enterprise-grade reinforcement ...
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 ...
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 ...
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 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 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 ...
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 ...
Member of Technical Staff - Product
Palo Alto, CA · On-site
$196K - $226K/yr
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 ...
Member of Technical Staff - Product
Palo Alto, CA · On-site
$196K - $226K/yr
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 ...
AI Infra Resident (1-Year Program)
$116K - $148K/yr
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 ...
AI Infra Resident (1-Year Program)
$116K - $148K/yr
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 ...
Performance Engineer
Palo Alto, CA · On-site
RadixArk is an infrastructure-first company focused on building world-class open systems for inference and training in AI. The Performance Engineer will analyze and improve performance across various ...
Performance Engineer
Palo Alto, CA · On-site
RadixArk is an infrastructure-first company focused on building world-class open systems for inference and training in AI. The Performance Engineer will analyze and improve performance across various ...
AI Infra Resident (1-Year Program)
Palo Alto, CA · On-site
$116K - $148K/yr
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 ...
AI Infra Resident (1-Year Program)
Palo Alto, CA · On-site
$116K - $148K/yr
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 ...
Member of Technical Staff - Reliability-CI Infrastructure
Palo Alto, CA · On-site
$200K - $400K/yr
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 ...
Member of Technical Staff - Reliability-CI Infrastructure
Palo Alto, CA · On-site
$200K - $400K/yr
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 ...
AI Infra Resident (1-Year Program)
Palo Alto, CA · On-site
$116K - $148K/yr
RadixArk is launching a full-time, paid, 1-year residency program for aspiring AI infrastructure engineers. The role involves rotating across various domains such as inference and training, working ...
AI Infra Resident (1-Year Program)
Palo Alto, CA · On-site
$116K - $148K/yr
RadixArk is launching a full-time, paid, 1-year residency program for aspiring AI infrastructure engineers. The role involves rotating across various domains such as inference and training, working ...
Member of Technical Staff -- Product
$196K - $226K/yr
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 ...
Member of Technical Staff -- Product
$196K - $226K/yr
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 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 ...
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 ...
Member of Technical Staff - Inference-Core Engine
Palo Alto, CA · On-site
$200K - $400K/yr
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 ...
Member of Technical Staff - Inference-Core Engine
Palo Alto, CA · On-site
$200K - $400K/yr
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 ...
Member of Technical Staff - Cluster Infrastructure & Supercomputing
Palo Alto, CA · On-site
$200K - $400K/yr
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 ...
Member of Technical Staff - Cluster Infrastructure & Supercomputing
Palo Alto, CA · On-site
$200K - $400K/yr
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 ...
Member of Technical Staff - Training
$200K - $400K/yr
About RadixArk RadixArk builds open-source and production infrastructure for large language models and multimodal post-training. Our systems - including Miles , an enterprise-grade reinforcement ...
Member of Technical Staff - Training
$200K - $400K/yr
About RadixArk RadixArk builds open-source and production infrastructure for large language models and multimodal post-training. Our systems - including Miles , an enterprise-grade reinforcement ...
Software Engineer, Product
Palo Alto, CA · On-site
RadixArk is an infrastructure-first company focused on building world-class open systems for AI infrastructure. They are seeking a Software Engineer, Product to collaborate with cross-functional ...
Software Engineer, Product
Palo Alto, CA · On-site
RadixArk is an infrastructure-first company focused on building world-class open systems for AI infrastructure. They are seeking a Software Engineer, Product to collaborate with cross-functional ...
RadixArk is an infrastructure-first company focused on democratizing frontier-level AI infrastructure. They are seeking a Member of Technical Staff to architect and scale core compute platforms for ...
RadixArk is an infrastructure-first company focused on democratizing frontier-level AI infrastructure. They are seeking a Member of Technical Staff to architect and scale core compute platforms for ...
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 infrastructure. They are seeking a Member of Technical Staff — CI Engineer to own and architect the CI infrastructure that supports their open-source LLM inference engine, ensuring reliability and performance for over 100 contributors.
Responsibilities:
• Own CI reliability end-to-end — triage failures, distinguish real regressions from flaky tests and infra issues, keep main green
• Build regression-based CI — replace hardcoded static thresholds with automated baseline comparison (metrics pipeline, durable storage, detection logic)
• Harden runner infrastructure — ephemeral runners, container isolation, security hardening for fork PR execution
• Cut CI time — right-size eval suites, deduplicate server startups, separate PR smoke tests from nightly full runs
• Improve developer experience — faster feedback, clearer failure messages, workflow orchestration
Qualifications:
Required:
• + 3+ years operating CI/CD at scale (GitHub Actions, Buildkite, Jenkins, GitLab CI, or similar)
• Deep Linux, Docker, GPU computing knowledge
• Self-hosted runner management experience
• Strong Bash and Python
• Security mindset — CI supply chain risks, fork PR attack vectors, runner hardening
• NVIDIA GPU drivers, CUDA, NCCL, InfiniBand/RDMA experience in CI contexts
• Familiarity with ML inference workloads (model loading, KV cache, quantization)
Preferred:
• Large open-source project CI experience (100+ contributors)
• AMD ROCm or Intel XPU CI pipelines
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 infrastructure. They are seeking a Member of Technical Staff — CI Engineer to own and architect the CI infrastructure that supports their open-source LLM inference engine, ensuring reliability and performance for over 100 contributors.
Responsibilities:
• Own CI reliability end-to-end — triage failures, distinguish real regressions from flaky tests and infra issues, keep main green
• Build regression-based CI — replace hardcoded static thresholds with automated baseline comparison (metrics pipeline, durable storage, detection logic)
• Harden runner infrastructure — ephemeral runners, container isolation, security hardening for fork PR execution
• Cut CI time — right-size eval suites, deduplicate server startups, separate PR smoke tests from nightly full runs
• Improve developer experience — faster feedback, clearer failure messages, workflow orchestration
Qualifications:
Required:
• + 3+ years operating CI/CD at scale (GitHub Actions, Buildkite, Jenkins, GitLab CI, or similar)
• Deep Linux, Docker, GPU computing knowledge
• Self-hosted runner management experience
• Strong Bash and Python
• Security mindset — CI supply chain risks, fork PR attack vectors, runner hardening
• NVIDIA GPU drivers, CUDA, NCCL, InfiniBand/RDMA experience in CI contexts
• Familiarity with ML inference workloads (model loading, KV cache, quantization)
Preferred:
• Large open-source project CI experience (100+ contributors)
• AMD ROCm or Intel XPU CI pipelines
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.