Senior Software Engineer, Metrics Platform - Weights & Biases

CoreWeave, the AI Hyperscaler™, acquired Weights & Biases to create the most powerful end-to-end platform to develop, deploy, and iterate AI faster. Since 2017, CoreWeave has operated a growing footprint of data centers covering every region of the US and across Europe, and was ranked as one of the TIME100 most influential companies of 2024. By bringing together CoreWeave’s industry-leading cloud infrastructure with the best-in-class tools AI practitioners know and love from Weights & Biases, we’re setting a new standard for how AI is built, trained, and scaled. The integration of our teams and technologies is accelerating our shared mission: to empower developers with the tools and infrastructure they need to push the boundaries of what AI can do.

About the Role

As a Software Engineer, you’ll lead efforts to scale our metrics and storage systems to meet the needs of our most advanced customers. Day to day, you’ll set technical direction, balancing near-term deliverables with long-term architectural improvements. You’ll partner with product, revenue, and engineering teams across W&B to evolve our platform and ensure it continues to meet customer demands. You’ll also help mentor engineers and drive best practices across the organization.

Responsibilities

• Build and scale the infrastructure behind Weights & Biases’ flagship Models product, powering experiment tracking and analytics for over 2,500 leading AI and ML teams
• Focus on data ingestion, storage, and querying at petabyte scale, optimizing for performance, reliability, and cost-effectiveness
• Set technical direction for metrics and storage systems, balancing near-term deliverables with long-term architectural improvements
• Partner with product, revenue, and engineering teams to evolve the platform and meet customer demands
• Mentor engineers and drive best practices across the organization

Requirements

• 4+ years of experience in software engineering, with a focus on backend performance and/or distributed systems
• Strong software engineering fundamentals and proficiency in at least one modern programming language (Python, Go, TypeScript, etc.)
• Experience designing and scaling customer-facing APIs in production, ideally leveraging systems such as MySQL, Clickhouse, Bigtable, Pub/Sub, or Kafka
• Hands-on experience with Kubernetes, Terraform, and at least one major cloud provider (GCP, AWS, or Azure)

Preferred Qualifications

• Experience mentoring junior engineers and collaborating with other business functions
• Background in large-scale metrics, logging, or analytics systems
• Familiarity with designing cost-optimized storage and query infrastructure

Why Join Us?

• Work hard, have fun, and move fast in an exciting stage of hyper-growth
• Entrepreneurial outlook and independent thinking encouraged
• Collaborative environment with opportunities to develop innovative solutions
• Surrounded by top talent in the industry, with mutual learning opportunities
• Core values: Be Curious at Your Core, Act Like an Owner, Empower Employees, Deliver Best-in-Class Client Experiences, Achieve More Together

Pay

The base salary range for this role is $139,000 to $204,000. The starting salary will be determined based on job-related knowledge, skills, experience, and market location. In addition to base salary, our total rewards package includes a discretionary bonus, equity awards, and a comprehensive benefits program (all based on eligibility).

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) and Health Savings Account (HSA)
• Tuition reimbursement
• 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
• Catered lunch each day in offices and data center locations
• Casual work environment
• Work culture focused on innovative disruption