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.

Responsibilities:

• Collaborate with cross-functional teams (Product, Design, Research, Infrastructure, Developer Relations) to design and ship developer-facing products on top of RadixArk's inference and training platforms
• Build and maintain customer-facing APIs, SDKs, CLIs, dashboards, and playgrounds that expose the power of SGLang, Miles, and our serving infrastructure in intuitive, well-documented interfaces
• Implement custom user interfaces and developer experiences using modern frontend and backend technologies, with a high bar for performance, accessibility, and craft
• Architect efficient and scalable systems that bridge low-level infrastructure (GPU scheduling, model serving, distributed training) with high-level product surfaces
• Analyze and optimize code for quality, efficiency, and performance, and provide thoughtful feedback to peers during code reviews
• Establish end-to-end ownership of components, features, or systems, from initial design through rollout, monitoring, and iteration
• Set direction and goals for product engineering initiatives, lead major launches, and provide technical guidance and mentorship to peers and new team members
• Identify and resolve performance, reliability, and scalability issues across the product stack, and drive efforts to reduce technical debt
• Participate in design reviews and technical discussions, evaluating trade-offs between system complexity, developer experience, and time-to-ship
• Work hand-in-hand with Product Managers to translate roadmap priorities into well-scoped technical deliverables, surfacing trade-offs and unblocking ambiguity early
• Engage directly with early adopters, design partners, and the open-source community to understand pain points and rapidly iterate on product experiences
• Contribute to technical content (documentation, code samples, blog posts, demos) that helps developers get the most out of RadixArk's products
• Use data, telemetry, and user feedback to validate hypotheses, measure the impact of launches, and inform what to build next