Senior Software Engineer - ML Model Training UI

Weights & Biases; Sunnyvale (CA); On-site; USD 120,000 - 190,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

Life Insurance

ESPP

Flexible PTO

401(k) with employer match

Catered lunch

Kinside childcare

Mental Wellness benefits

Job summary

CoreWeave in Sunnyvale, California is seeking a Front End Engineer to join the Data Visualization team and work on the architecture of the visualization engine powering AI experiment tracking.

You will optimize line plots for millions of data points, collaborate with designers, and coordinate with back-end engineers to streamline data streaming.

The role emphasizes curiosity and deep technical knowledge, with a focus on performance and delivering intuitive, responsive charts.

Qualifications

• Experience with modern JavaScript/TypeScript and React.
• Expertise in web-based visualization libraries.
• Ability to measure and optimize front-end performance for rendering large datasets and maintaining 60fps interactions.

Responsibilities

• Join the fullstack History team focusing on the core visualization engine that powers experiment tracking.
• Scale charting components to handle millions of data points with smooth interactivity.
• Implement features to help AI researchers 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.

Skills

JavaScript/TypeScript

React

Performance optimization

Collaboration

Tools

Canvas/WebGL

React vis

uPlot

Job description

What You’ll Do

• Join the fullstack Weights & Biases History team, focusing on the core visualization engine that powers experiment tracking for over 1,000 organizations and labs building AI across LLMs, agents, robotics, drug discovery, and more. Build highly performant, interactive, and intuitive tools to help ML practitioners visualize complex training metrics in real‑time.

About the Role

• Work as a Front End Engineer on Data Visualization, focusing on the architecture and performance of line plots within the W&B UI.
• Scale charting components to handle millions of data points with smooth interactivity.
• Implement new features that help AI researchers at the world’s top labs explore their data and build better models.
• Collaborate with product designers to refine user experiences and with back‑end engineers to optimize data streaming for charts.

Who You Are

• Exhibit extensive experience with modern JavaScript/TypeScript and React.
• Have expertise in web‑based visualization libraries.
• Show demonstrated ability to measure and optimize front‑end performance for rendering large datasets and maintaining 60fps interactions.
• Approach work with curiosity, seeking deep technical knowledge rather than just moving tickets.
• Collaborate effectively, sharing knowledge and working with others on debugging and customer issues.

Preferred

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

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.
• Health Savings Account.
• Tuition Reimbursement.
• Participation in Employee Stock Purchase Program (ESPP).
• Mental Wellness Benefits through Spring Health.
• Family‑Forming support via Carrot.
• Paid Parental Leave.
• Flexible, full‑service childcare support with Kinside.
• 401(k) with generous employer match.
• Flexible PTO.
• Catered lunch each day in office and data center locations.
• A casual work environment focused on innovative disruption.

Equal Opportunity & Accommodations

CoreWeave 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 this commitment and consistent with the Americans with Disabilities Act (ADA), CoreWeave will provide reasonable accommodations for the hiring process, unless such accommodation would cause undue hardship. If accommodation is needed, please contact [e-mail].

Export Control Compliance

This position requires access to export‑controlled information. To conform to U.S. Government export regulations, applicant must: (i) be a U.S. person (citizen, lawful permanent resident, refugee or asylee) or (ii) be eligible to access the information without required export authorization, or (iii) be eligible and reasonably likely to obtain the required export authorization. CoreWeave may decline the export licensing process for legitimate business reasons.