Senior Full-Stack Engineer, AI Agent at Scale

Weights & Biases; San Francisco (CA); On-site; USD 182,000 - 242,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

401(k) with employer match

Flexible PTO

Comprehensive benefits

Job summary

CoreWeave is hiring a Senior Full Stack Engineer for the ARIA Agent team in California. You will own features across backend services and React frontend, building distributed worker systems for agent conversations and a streaming architecture for real-time token output.

You will collaborate with ML science, product, iOS, and SRE teams to ensure reliable, fast, and secure experiences. Expect work on production memory leaks, billing UI components, and sandbox-egress hardening in a fast-paced

Qualifications

• 4+ years of full-stack engineering experience with backend services and React/TypeScript frontend.
• Strong Python backend skills including async patterns and FastAPI.
• Proficiency in TypeScript/React with real-time streaming interfaces and responsive layouts.
• Experience at scale: rolling deploys, autoscaling, worker concurrency.
• Observability capabilities and building dashboards for actionable signals.
• Security-conscious engineering mindset: input validation, sandboxed code execution, egress controls.
• Experience with MySQL or similar RDBMS for transactional state management.

Responsibilities

• Own features and systems across the full stack—from backend infrastructure to the React frontend powering the chat interface, billing UI, and agent configuration experience.
• Build and maintain distributed worker systems that run agent conversations at scale and design the streaming architecture for real-time token output.
• Collaborate with ML science, product, iOS, and SRE teams to blend reliability engineering with product sensibility.
• Address production issues, ship new UI components (e.g., billing UI), and harden code-execution sandbox and egress controls.

Skills

Full stack engineering

React/TypeScript

Python backend (FastAPI)

Kubernetes

Distributed systems

Observability (Datadog, Weave)

Security‑minded engineering

MySQL (RDBMS)

Tools

FastAPI

Kubernetes

Datadog

Weave tracing

Job description

CoreWeave is hiring a Senior Full Stack Engineer for the ARIA Agent team in California. You will own features across backend services and React frontend, building distributed worker systems for agent conversations and a streaming architecture for real-time token output.

You will collaborate with ML science, product, iOS, and SRE teams to ensure reliable, fast, and secure experiences. Expect work on production memory leaks, billing UI components, and sandbox-egress hardening in a fast-paced