Software Engineer, Product

Responsibilities

• Collaborate with cross-functional teams to design and ship developer-facing products on top of inference and training platforms
• Build and maintain customer-facing APIs, SDKs, CLIs, dashboards, and playgrounds
• Implement custom user interfaces and developer experiences using modern frontend and backend technologies
• Architect efficient and scalable systems bridging low-level infrastructure with high-level product surfaces
• Establish end-to-end ownership of components from design through rollout and monitoring
• Work with Product Managers to translate roadmap priorities into technical deliverables
• Engage with early adopters and the open-source community to iterate on product experiences

Requirements

• Bachelor's degree in Computer Science, Computer Engineering, or equivalent practical experience
• 5+ years of software engineering experience building production systems, or 3+ years with a PhD
• Strong programming skills in Python, TypeScript/JavaScript, Go, C++, or Rust
• Demonstrated experience shipping developer-facing or product-facing software end-to-end
• Experience using data and analysis to inform design decisions
• Excellent collaboration and communication skills

Preferred Qualifications

• Experience building products on top of AI/ML infrastructure or large-scale distributed systems
• Familiarity with LLM inference and training stacks (e.g., SGLang, vLLM, PyTorch, Ray)
• Experience contributing to or maintaining open-source projects in the AI/ML ecosystem
• Strong product sensibility and UX/API design decision-making
• Experience working in B2B or infrastructure product environments

About the Company

RadixArk is an infrastructure-first company built by engineers who've shipped production AI systems, created SGLang, and developed Miles. We are on a mission to democratize frontier-level AI infrastructure by building world-class open systems for inference and training.