Senior Software Engineer II, ML Workflows - W&B
About The Position
CoreWeave is hiring a Senior Software Engineer for W&B’s ML Workflows organization. Reporting to the Senior Engineering Manager for ML Workflows, this engineer will own the architecture and evolution of core systems in the Weights & Biases platform. ML Workflows includes Artifacts, the versioned data layer; Registry, the organization-wide source of truth for production-ready models; Automations, the event and action layer; and Launch, execution infrastructure for customer ML and agent workloads. The role owns systems end to end, from design through production reliability, and works across the W&B backend, Python SDK, and frontend. The engineer partners with product managers, designers, ML platform engineers, and enterprise ML teams. Team placement is based on the candidate’s strengths and interests. W&B products are being built onto CoreWeave infrastructure, creating opportunities to shape that work.
Requirements
- Bachelor’s degree or foreign equivalent in Computer Science, Computer Engineering, Data Science, Information Systems, or a closely related technical or quantitative field involving substantial engineering coursework.
- At least 8 years of software engineering experience, including time leading significant technical initiatives or architectural changes.
- Strong proficiency in Go, or in another compiled language such as C, C++, C#, Rust, or Java, with the ability to ramp up on Go quickly.
- Working proficiency in Python.
- Ability to investigate complex systems you did not write and diagnose and fix difficult bugs across service boundaries.
- Track record of mentoring engineers and raising the technical bar.
- Strong communication skills, including explaining complex technical decisions to different audiences.
- Depth in one or two areas such as distributed systems and infrastructure; frontend and full-stack development; data at scale; APIs and developer surfaces; or event-driven systems.
Nice To Haves
- Experience in ML infrastructure, MLOps, or developer tools.
- Expertise in containers and Kubernetes, cloud infrastructure, or orchestration.
- Experience with TypeScript, React, complex state management, or frontend performance.
- Experience with schema design, query performance, large-scale storage, or analytical stores such as ClickHouse.
- Experience with API design, GraphQL query optimization, data-fetching strategies, SDKs, or client libraries.
- Experience with Kafka or PubSub, delivery semantics, idempotency, or retries.
Responsibilities
- Own the architecture and evolution of a core platform area, designing systems that scale to billions of artifacts and high-volume event and job throughput.
- Analyze system architecture to identify optimization opportunities, solve complex bugs, and balance short-term delivery with long-term platform health.
- Work across Go backend services, GraphQL APIs, the Python SDK, and the TypeScript frontend as needed.
- Lead migrations and re-architecture of systems carrying live customer traffic while maintaining a seamless customer experience.
- Identify and refactor technical debt to improve maintainability and developer productivity.
- Establish engineering patterns and best practices that support platform growth.
- Collaborate with product and design to translate complex user requirements into technical implementations.
- Work directly with customers to understand ML workflow challenges and bring their feedback into the product cycle.
- Mentor engineers and raise the technical bar across the team.
Benefits
- Medical, dental, and vision insurance, 100% paid for by CoreWeave for US-based full-time employees.
- 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 a generous employer match.
- Flexible PTO.
- Discretionary bonus and equity awards, subject to eligibility.
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What This Job Offers
Job Type
Full-time
Career Level
Senior
