Senior Software Engineer, W&B Agent - W&B
CoreWeave · Livingston, NJ / New York, NY / San Francisco, CA / Sunnyvale, CA / Bellevue, WA
About this role
**Senior Software Engineer, W&B Agent (ARIA) — CoreWeave** **About CoreWeave** CoreWeave is the essential cloud for AI—built for pioneers by pioneers. The company delivers technology, tools, and teams that help innovators build and scale AI with confidence. CoreWeave acquired Weights & Biases to create a powerful end-to-end platform for developing, deploying, and iterating AI faster. **What You’ll Do** ARIA is the AI Research and Iterations Agent that enables continuous experimentation at scale. You’ll help build ARIA from scratch—owning features and systems across the full stack, including: - **Backend infrastructure & API design** - **Distributed worker systems** that run multi-turn agent conversations at scale - **Streaming architecture** for real-time token output to the browser - **React frontend** for the chat interface, billing UI, and agent configuration - **Reliability + security** work (e.g., debugging production issues, hardening code execution sandbox egress controls) **About the Role** As a **Senior Full Stack Engineer** on the ARIA Agent team, you’ll collaborate with ML science, product, iOS, and SRE to ship a fast, reliable, and delightful agent experience that accelerates ML workflows end to end. **Who You Are** - Bachelor’s degree (or foreign equivalent) in a relevant technical/quantitative field - **4+ years** full stack engineering experience (backend + React/TypeScript) - Strong **Python** backend skills (async patterns, FastAPI, distributed state machines, Kubernetes lifecycle) - Proficient in **TypeScript + React**, comfortable building production UI components (streaming interfaces, complex state, responsive layouts) - Experience building/operating services at scale (rolling deploys, autoscaling, worker concurrency, graceful termination) - Observability experience (e.g., Datadog, tracing, structured logging) and building actionable dashboards - Security-conscious engineering mindset (input validation, sandboxed execution, egress controls, payload hardening) - Experience with **MySQL** or similar RDBMS **Preferred** - Streaming UI experience (SSE/WebSockets) with graceful fallback - Background in ML infrastructure, developer tooling, or observability platforms - Hands-on experience shipping production-grade AI agents (tool use, multi-turn management, agent reliability) - Thrives in a fast-paced startup environment **Why Us?** CoreWeave values curiosity, ownership, empowerment, best-in-class client experiences, and achieving more together. You’ll work in an environment that supports independent thinking and rapid iteration. **Compensation & Benefits (Summary)** - Base salary range: **$182,000–$242,000** (based on knowledge, skills, experience, and location) - Total rewards may include discretionary bonus, equity awards, and comprehensive benefits (eligibility-based) **Benefits (US-based examples)** Medical/dental/vision (100% paid), life insurance, disability coverage, flexible spending & HSA, tuition reimbursement, ESPP, Spring Health mental wellness, paid parental leave, 401(k) match, flexible PTO, and more. *If you’d like, paste the application link or “how to apply” section and I’ll format that too.*
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