Senior Software Engineer, Weave - Weights & Biases

CoreWeave • San Francisco, NY

1d

About The Position

CoreWeave is hiring a Senior Software Engineer to help build and scale Weave, its observability, evaluation, and monitoring platform for AI agents and generative AI applications. Weave supports production tracing, offline evaluations, online monitoring, and alerting, helping customers create auto-improving loops for their AI agents.

This foundational role on a small, growing team involves designing and shipping core product functionality, gathering feedback directly from users and customers, and continuously improving the product experience. The engineer will work with AI builders to develop tools that help teams understand, evaluate, and iterate on AI agents. The role includes building robust APIs and integrations, improving backend performance for low-latency, high-volume workloads, and creating user-facing features for evaluation, labeling, tracing, and related workflows.

The position collaborates directly with users to understand their workflows and rapidly iterate on solutions. The job posting describes a fast-moving, collaborative environment that values curiosity, ownership, customer experience, independent thinking, and learning amid change.

Requirements

• Bachelor’s degree in Computer Science or a related field.
• At least 8 years of experience in Software Engineering.
• Deep knowledge of Python and/or TypeScript.
• Personal or professional experience building AI agents.
• Ability to operate effectively amid ambiguity and adapt rapidly to a changing environment.

Nice To Haves

• Previous startup experience.
• Experience managing large-scale online production services or OLAP databases.

Responsibilities

• Implement robust and ergonomic APIs.
• Design and build integrations with agent harnesses and SDKs, such as Claude Code, Codex, pi.dev, and OpenAI Agents SDK.
• Scale and improve backend performance to support low-latency, high-volume production use cases.
• Build polished, intuitive features such as online LLM judges, playgrounds, evaluations, labeling, and tracing user experiences.
• Partner directly with users to understand workflows, gather feedback, and rapidly iterate on solutions.
• Design and ship core functionality for the Weave platform.

Benefits

• Medical, dental, and vision insurance, 100% paid for by CoreWeave.
• Company-paid life insurance.
• Voluntary supplemental life insurance.
• Short- and long-term disability insurance.
• Flexible Spending Account.
• Health Savings Account.
• Tuition reimbursement.
• Ability to participate in the 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 an employer match.
• Flexible PTO.
• Discretionary bonus.
• Equity awards.
• Catered lunch each day in office and data center locations.
• Casual work environment.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior