Senior Software Engineer - ML Model Training UI

Core Weave, the AI Hyperscaler™, acquired Weights & Biases to create a powerful end‑to‑end platform for developing, deploying, and iterating AI. The company operates data centers across the U.S. and Europe and is recognized as a TIME
100 influential company of 2024.

Join the full‑stack W&B History team to build the core visualization engine that powers experiment tracking for thousands of organizations and labs working with LLMs, agents, robotics, drug discovery, and more.

• Design and develop highly performant, interactive, and intuitive visualization tools that help machine‑learning practitioners view complex training metrics in real time.

• Front‑End Engineer focusing on data visualization; architect and optimize line‑plot performance within the W&B UI.
• Scale charting components to handle millions of data points while maintaining smooth interactivity.
• Implement new features enabling researchers at top labs to explore data and build better models.
• Collaborate with product designers to refine user experiences and with back‑end engineers to optimize data streaming for charts.

• Extensive experience with modern JavaScript/Type Script and React.
• Knowledge of web‑based visualization libraries.
• Ability to measure and optimize front‑end performance for large datasets, maintaining 60 fps interactions.
• Curiosity to dig into technical systems and continuously improve them.
• Collaborative mindset; willing to share knowledge and debug with teammates.

• Background in machine‑learning workflows or strong interest in the AI/ML ecosystem.
• Experience with Canvas/WebGL or visualization libraries such as React‑vis or uPlot.

The base salary range for this role is $182,000 to $242,000. Compensation is determined based on experience, skills, and market location. In addition to base salary, we offer a discretionary bonus, equity awards, and a comprehensive benefits program.

• Medical, dental, and vision insurance – 100 % paid by Core Weave.
• Company‑paid life insurance.
• Voluntary supplemental life insurance.
• Short‑term and long‑term disability insurance.
• Flexible Spending Account.
• Health Savings Account.
• 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 generous employer match.
• Flexible PTO.
• Catered lunch each day at our office and data‑center locations.
• A casual work environment.
• Culture focused on innovative disruption.

Core Weave is an equal‑opportunity employer, committed to fostering an inclusive and supportive workplace. All qualified applicants and candidates will receive consideration for employment without regard to race, color, religion, sex, disability, age, sexual orientation, gender identity, national origin, veteran status, or genetic information.

As part of the Americans with Disabilities Act (ADA), Core Weave will provide reasonable accommodations for the hiring process unless such accommodation would cause undue hardship. Contact  if an accommodation is needed.

• This position requires access to export‑controlled information. To comply with U.S. Government export regulations, an applicant must be a U.S. person (U.S. citizen, lawful permanent resident, refugee, or asylee) or otherwise eligible to access the information without an export authorization.

California Consumer Privacy Act compliance applies to California residents. For details, please review the company policies.