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Weights & Biases · 19 hours ago

Senior Software Engineer, Billing - Weights & Biases

Sunnyvale, CA

Full-time

Hybrid

Senior Level

$182K/yr - $242K/yr

5+ years exp

Weights & Biases, acquired by CoreWeave, is focused on creating a powerful platform for AI development and deployment. They are seeking a Senior Software Engineer for the Billing team to lead full stack development and influence billing systems across teams, ensuring clarity and collaboration in a fast-changing industry.

AI InfrastructureArtificial Intelligence (AI)Data VisualizationDeveloper ToolsGenerative AIMachine Learning

Comp. & Benefits

No H1B

U.S. Citizen Only

Responsibilities

Lead end-to-end development across our Go services and React applications, shaping systems that must balance correctness, flexibility, and usability for customers and internal teams

Bring clarity to evolving problem spaces by identifying constraints, defining practical boundaries, and aligning cross-functional partners early and often

Evaluate technical debt and existing system behavior with strong judgment — knowing when to refactor, when to extend, and when to avoid premature over-engineering based on business volatility

Design APIs, data models, and cross-team interfaces that support clear contracts and enable reliable collaboration between product areas

Collaborate closely with product, design, finance, and engineering stakeholders to ensure technical decisions reflect real user needs and emerging business realities

Improve system reliability and operational maturity by identifying high-impact risks, proposing incremental safeguards, and distinguishing between must-haves and nice-to-haves for SLAs

Influence how engineering teams work together by modeling effective communication, offering constructive feedback, and proposing patterns that elevate shared understanding across the org

Help evolve developer experience and observability by shaping logging patterns, instrumentation approaches, or other lightweight frameworks that can scale across teams

Qualification

GoReactFull stack developmentAPI designData modelingCommunicationProblem-solvingCollaboration

Required

5+ years of experience building and maintaining production web applications, with strong competency across both backend and frontend systems

Deeply comfortable working in evolving or ambiguous systems, using pragmatic decision-making to drive progress without unnecessary rework or premature abstraction

Experienced with Go, React, or similar technologies, and proficient in designing clean interfaces between services, databases, and UI flows

Skilled at evaluating performance, reliability, and operational cost — determining when improvements materially change outcomes and when simpler solutions suffice

Strong communicator who collaborates effectively across teams, clarifies requirements, articulates tradeoffs, and helps align partners with different priorities

Thoughtful about user flows, incentive structures, and how customers perceive value and trust in usage-based products

Someone who brings craft and creativity to problem-solving — able to design solutions that balance engineering rigor with product agility