Senior Software Engineer, Weave - Weights & Biases

Reposted 10 Days Ago
San Francisco, CA
In-Office
175K-275K Annually
Senior level
Cloud • Information Technology • Machine Learning
We empower creators and innovators with access to GPU resources they need to work more efficiently.
The Role
Design and build Weave, a lightweight toolkit for GenAI applications, enhancing backend performance and collaborating with users to improve features.
Summary Generated by Built In
CoreWeave is The Essential Cloud for AI™. Built for pioneers by pioneers, CoreWeave delivers a platform of technology, tools, and teams that enables innovators to build and scale AI with confidence. Trusted by leading AI labs, startups, and global enterprises, CoreWeave combines superior infrastructure performance with deep technical expertise to accelerate breakthroughs and turn compute into capability. Founded in 2017, CoreWeave became a publicly traded company (Nasdaq: CRWV) in March 2025. Learn more at www.coreweave.com.
What You’ll Do:

Weave is our new lightweight toolkit for tracking and evaluating GenAI applications. Our users rely on Weave to understand and improve their AI-powered products — from Agents to Retrieval Augmented Generation (RAG) systems and beyond.

About the Role:

We’re looking for Software Engineers to help build and scale Weave. In this foundational role on a small but growing team, you’ll design and ship core functionality, gather feedback directly from early adopters, and continuously improve the product experience. You’ll work closely with cutting-edge AI builders, developing the next generation of tools that help teams understand, evaluate, and iterate on their GenAI applications.

  • Implement robust and ergonomic open-source client APIs.

  • Design and build integrations with popular LLM tools such as LlamaIndex, LangChain, and Instructor.

  • Scale and improve backend performance to support low-latency, high-volume production use cases.

  • Build polished and intuitive features such as multi-modal evaluations, LLM playgrounds, and dataset editing/drill-down capabilities.

  • Partner directly with users to understand workflows, gather feedback, and rapidly iterate on solutions.

Who You Are
  • Bachelor’s degree in Computer Science or related field.

  • 8+ years of experience in Software Engineering.

  • Deep knowledge of Python and/or TypeScript.

  • Experience (personal or professional) in building GenAI-powered applications.

  • Ability to operate effectively amid ambiguity and adapt rapidly to a changing environment.

  • Previous startup experience is a plus.

Preferred
  • Experience managing large-scale online production services or OLAP databases.

Wondering if you’re a good fit? We believe in investing in our people and value candidates who bring diverse experiences — even if you aren’t a 100% match. Here are a few qualities that tend to resonate with our team:
  • You thrive at the intersection of software, hardware, and ML infrastructure — from tuning distributed systems to scaling backend services.

  • You’re passionate about building tools that developers love to use — intuitive APIs and UX that bring clarity and speed to AI workflows.

  • You’re curious about the full AI lifecycle — from experiment tracking and model deployment to observability and evaluation — and want to shape an end-to-end platform that redefines how AI is built and scaled.

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 salary range for this role is $175,000 to $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: [email protected].


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.

Top Skills

Olap
Python
Typescript

What the Team is Saying

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The Company
HQ: Livingston, NJ
1,450 Employees
Year Founded: 2017

What We Do

CoreWeave, the AI Hyperscaler™, delivers a cloud platform of cutting-edge software powering the next wave of AI. The company's technology provides enterprises and leading AI labs with cloud solutions for accelerated computing. Since 2017, CoreWeave has operated a growing footprint of data centers across the US and Europe. CoreWeave was ranked as one of the TIME100 most influential companies and featured on Forbes Cloud 100 ranking in 2024. Learn more at www.coreweave.com.

Why Work With Us

At CoreWeave we work hard, have fun and move fast! Today we are a small, growing team of intelligent, genuine people, that value different perspectives and approaches to solving complex problems. We foster an environment that champions collaboration and prioritizes innovative solutions. Here, you are surrounded by the best.

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CoreWeave Offices

Hybrid Workspace

Employees engage in a combination of remote and on-site work.

Typical time on-site: Flexible
HQLivingston, NJ
Bellevue, WA
London, UK
New York, NY
Philadelphia, PA
Sunnyvale, CA
Learn more

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