Senior Full-Stack AI Agent Engineer — Real-Time UI

Weights & Biases; Livingston (NJ); On-site; USD 182,000 - 242,000; Full time

Benefits offered by this job

Medical, dental, vision insurance

401(k) with match

Employee stock purchase program (ESPP)

Flexible PTO

Job summary

CoreWeave is hiring a Senior Full Stack Engineer for the ARIA Agent team. You will own features across backend and the React frontend, building and maintaining distributed worker systems that run agent conversations at scale.

You’ll design streaming architectures delivering real-time token output and contribute to frontend components for a fast, intuitive experience. You will collaborate with ML science, product, iOS, and SRE teams, debugging production issues, shipping a billing UI component,

Qualifications

• 4+ years of full stack engineering experience.
• Strong Python backend skills with async patterns, FastAPI, distributed state machines, Kubernetes.
• Proficient in TypeScript and React; able to build production UI components with real-time streaming interfaces.
• Experience building and operating services at scale—rolling deploys, autoscaling, worker concurrency.
• Experience with observability tooling (Datadog, Weave tracing) and building dashboards.
• Security-conscious engineering mindset—input validation, sandboxed code execution, egress controls.

Responsibilities

• Own features and systems across the entire stack—from backend infrastructure and API design to the React frontend.
• Build and maintain distributed worker systems that run agent conversations at scale.
• Design the streaming architecture delivering real-time token output to the browser.
• Collaborate with ML science, product, iOS, and SRE teams.
• Debug production memory leaks, ship new UI components, and harden code execution sandbox egress controls.

Skills

Full stack

Python

TypeScript

Observability

Security

MySQL

Tools

FastAPI

Datadog

Weave tracing

WebSockets

Kubernetes

Job description

CoreWeave is hiring a Senior Full Stack Engineer for the ARIA Agent team. You will own features across backend and the React frontend, building and maintaining distributed worker systems that run agent conversations at scale.

You’ll design streaming architectures delivering real-time token output and contribute to frontend components for a fast, intuitive experience. You will collaborate with ML science, product, iOS, and SRE teams, debugging production issues, shipping a billing UI component,