Senior Software Engineer, Weave - Weights & Biases

About the role

Weave is CoreWeave’s observability, evaluation, and monitoring platform for AI agents and GenAI applications. Our customers rely on Weave to build the auto-improving loop for their AI agents: including production tracing, offline evaluations, online monitoring and alerting.

Responsibilities

• Design and ship core functionality for Weave.
• Work closely with cutting-edge AI builders to develop the next generation of tools that help teams understand, evaluate, and iterate on their AI agents.
• Implement robust and ergonomic APIs.
• Build integrations with popular agent harnesses and SDKs such as Claude Code, Codex, pi.dev, OpenAI Agents SDK, etc.
• Scale and improve backend performance to support low-latency, high-volume production use cases.
• Build polished and intuitive features such as online LLM judges, playgrounds, evaluations, labeling, and tracing UX.
• Partner directly with users to understand workflows, gather feedback, and rapidly iterate on solutions.

Requirements

• Bachelor’s degree in Computer Science or related field.
• 8+ years of experience in Software Engineering.
• Deep knowledge of Python and/or TypeScript.
• Experience (personal or professional) in building AI agents.
• Ability to operate effectively amid ambiguity and adapt rapidly to a changing environment.
• Previous startup experience is a plus.
• PREFERRED: Managing large-scale online production services or OLAP databases.

Qualifications

• Preferred: Managing large-scale online production services or OLAP databases.

Skills

• Thrive at the intersection of software, hardware, and ML infrastructure — from tuning distributed systems to scaling backend services.
• Passionate about building tools that developers love to use — intuitive APIs and UX that bring clarity and speed to AI workflows.
• Curious about the full AI lifecycle — from experiment tracking and model deployment to observability and evaluation — and want to shape an end-to-end platform that redefines how AI is built and scaled.

Benefits

• The base salary range for this role is $165,000 to $220,000.
• In addition to base salary, our total rewards package includes a discretionary bonus, equity awards, and a comprehensive benefits program (all based on eligibility).
• 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 (FSA) and Health Savings Account (HSA).
• Tuition Reimbursement.
• 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.
• Flexible PTO.
• Catered lunch each day in our office and data center locations.
• A casual work environment.
• A work culture focused on innovative disruption.

Why Us?

• We work hard, have fun, and move fast!
• We’re in an exciting stage of hyper-growth that you will not want to miss out on.
• We’re not afraid of a little chaos, and we’re constantly learning.
• We foster an environment that encourages collaboration and provides the opportunity to develop innovative solutions to complex problems.