What is Weights & Biases?

Weights & Biases is actively hiring for Engineering roles. Visit the company page to see all open positions and learn more about working at Weights & Biases.

Staff Engineer, CoreUX and Expansion- Weights & Biases

$188k - $275k

Weights & Biases Livingston, NJ / New York; NY / Sunnyvale, CA / Bellevue; WA 8 days ago

engineering

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. From experiment tracking and model optimization to high-performance training clusters, agent building, and inference at scale, we’re combining forces to serve the full AI lifecycle — all in one seamless platform.

Weights & Biases has long been trusted by over 1,500 organizations — including AstraZeneca, Canva, Cohere, OpenAI, Meta, Snowflake, Square,Toyota, and Wayve — to build better models, AI agents and applications. Now, as part of CoreWeave, that impact is amplified across a broader ecosystem of AI innovators, researchers, and enterprises.

As we unite under one vision, we’re looking for bold thinkers and agile builders who are excited to shape the future of AI alongside us. If you're passionate about solving complex problems at the intersection of software, hardware, and AI, there's never been a more exciting time to join our team.

What You’ll Do:

CoreUX & Expansion team is dedicated to shaping seamless, intuitive experiences that power growth and engagement. The team drives the evolution of core user flows, expansion pathways, and in-app experiences to unlock customer success at scale. With a focus on long-term ownership and excellence, the team ensures our application remains both elegant and impactful.

About the role: As a Tech Lead Staff Engineer, you will lead a small team of 2–3 engineers while remaining hands-on in development. You will drive engineering efforts and code ownership across critical product areas, ensuring a smooth, reliable, and bug-free customer experience. In this role, you’ll collaborate closely with PMs, customers, and cross-functional stakeholders to align priorities and deliver high-impact solutions. You will set and uphold high standards for usability, code quality, and technical excellence, guiding the team to build scalable and user-friendly experiences.

Who You Are

You have 10+ years of professional software engineering experience, including 5+ years working with modern JavaScript frameworks.
You are an expert in JavaScript, React.js, and GraphQL, with a proven track record of delivering production-grade features at scale.
You have experience leading small engineering teams, balancing hands-on coding with mentoring and technical guidance.
You care deeply about usability, accessibility, and performance, and have successfully shipped customer-facing UI/UX improvements.
You excel at cross-functional collaboration, working closely with PMs, designers, and stakeholders to deliver intuitive, high-quality user experiences.

Preferred:

Experience with TypeScript and strong typing practices.
Background in design systems or component libraries, with an eye for scalable, reusable UI patterns.
Familiarity with navigation and information architecture design for complex applications.
Exposure to SaaS growth and expansion flows (sign-up, licensing, in-app guides, surveys).
Knowledge of telemetry, analytics, and experimentation frameworks to measure and improve user experience.

Wondering if you’re a good fit? We believe in investing in our people, and value candidates who can bring their own diversified experiences to our teams – even if you aren't a 100% skill or experience match. Here are a few qualities we’ve found compatible with our team. If some of this describes you, we’d love to talk.

You love exploring new ideas and approaches.
You take initiative and drive projects with accountability and care.
You thrive in an environment where people are trusted to empower each other and bring their best work forward.
You care deeply about delivering best-in-class client experiences, ensuring every interaction with our product feels intuitive and reliable.
You enjoy collaborating across teams to build something greater than any of us could alone.

Why Us?

We work hard, have fun, and move fast! We’re in an exciting stage of hyper-growth that you will not want to miss out on. We’re not afraid of a little chaos, and we’re constantly learning. Our team cares deeply about how we build our product and how we work together, which is represented through our core values:

Be Curious at Your Core
Act Like an Owner
Empower Employees
Deliver Best-in-Class Client Experiences
Achieve More Together

We support and encourage an entrepreneurial outlook and independent thinking. We foster an environment that encourages collaboration and provides the opportunity to develop innovative solutions to complex problems. As we get set for takeoff, the growth opportunities within the organization are constantly expanding. You will be surrounded by some of the best talent in the industry, who will want to learn from you, too. Come join us!

The base pay for this position ranges from $188,000- $275,000. The starting salary will be determined based on job-related knowledge, skills, experience, and market location. We strive for both market alignment and internal equity when determining compensation. In addition to base salary, our total rewards package includes a discretionary bonus, equity awards, and a comprehensive benefits program (all based on eligibility)

What We Offer

The range we’ve posted represents the typical compensation range for this role. To determine actual compensation, we review the market rate for each candidate which can include a variety of factors. These include qualifications, experience, interview performance, and location.

In addition to a competitive salary, we offer a variety of benefits to support your needs, including:

Medical, dental, and vision insurance - 100% paid for by CoreWeave
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 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 our office and data center locations
A casual work environment
A work culture focused on innovative disruption

Our Workplace

While we prioritize a hybrid work environment, remote work may be considered for candidates located more than 30 miles from an office, based on role requirements for specialized skill sets. New hires will be invited to attend onboarding at one of our hubs within their first month. Teams also gather quarterly to support collaboration

California Consumer Privacy Act - California applicants only

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 ensure that qualified applicants and candidates with disabilities are provided reasonable accommodations for the hiring process, unless such accommodation would cause an undue hardship. If reasonable accommodation is needed, please contact: careers@coreweave.com.

Export Control Compliance

This position requires access to export controlled information. To conform to U.S. Government export regulations applicable to that information, applicant must either be (A) a U.S. person, defined as a (i) U.S. citizen or national, (ii) U.S. lawful permanent resident (green card holder), (iii) refugee under 8 U.S.C. § 1157, or (iv) asylee under 8 U.S.C. § 1158, (B) eligible to access the export controlled information without a required export authorization, or (C) eligible and reasonably likely to obtain the required export authorization from the applicable U.S. government agency. CoreWeave may, for legitimate business reasons, decline to pursue any export licensing process.