Senior Software Engineer, W&B Agent - W&B

About the role

The ARIA Agent team at CoreWeave is responsible for building the AI Research and Iterations Agent, enabling continuous experimentation at scale. This role involves owning features and systems across the entire stack, from backend infrastructure and API design to the React frontend.

Responsibilities

• Build and maintain distributed worker systems that run agent conversations at scale.
• Design and implement streaming architecture for delivering real-time token output to the browser.
• Contribute to frontend components that make ARIA feel fast and intuitive.
• Collaborate with ML science, product, iOS, and SRE teams to blend reliability engineering with product sensibility.
• Maintain a security-conscious engineering mindset, ensuring input validation, sandboxed code execution, egress controls, and payload hardening.
• Experience with MySQL or similar RDBMS for transactional state management.

Requirements

4+ years of full stack engineering experience, with meaningful depth in both backend services and React/TypeScript frontend development.

• Strong Python backend skills — async patterns, FastAPI, distributed state machines, Kubernetes pod lifecycle.
• Proficient in TypeScript and React; comfortable building and maintaining production UI components including real-time streaming interfaces, complex state management, and responsive layouts across web and mobile web.
• Experience building and operating services at scale — rolling deploys, autoscaling, worker concurrency, graceful termination.
• Experience with observability tooling (Datadog, Weave tracing, structured logging) and a track record of building dashboards that surface actionable signals.

Qualifications

• Experience with MySQL or similar RDBMS for transactional state management.
• Background in ML infrastructure, developer tooling, or observability platforms.
• Comfortable thriving in a fast-paced startup environment — able to move quickly, make pragmatic tradeoffs, and iterate on real user feedback without sacrificing production quality.

Skills

Expertise in transforming deep technical insights into tools and processes that empower other engineers to build faster, more reliable systems.

Benefits

• Medical, dental, and vision insurance - 100% paid by CoreWeave.
• Company-paid Life Insurance.
• Voluntary supplemental life insurance.
• Short and long-term disability insurance.
• Flexible Spending Account (FSA).
• Health Savings Account (HSA).
• Tuition Reimbursement.
• Ability to participate in Employee Stock Purchase Program (ESPP).
• Mental Wellness Benefits through Spring Health.
• Family-Forming support provided by Carrot.
• Paid Parental Leave.
• Flexible, full-service childcare support with Kinside.
• 401(k) with a generous employer match.
• Catered lunch each day in our office and data center locations.
• A casual work environment.
• A work culture focused on innovative disruption.