Senior Software Engineer, Core Open-Source (frontend/fullstack) - Weights & BiasesWeights & Biases • United States
Senior Software Engineer, Core Open-Source (frontend/fullstack) - Weights & Biases
Weights & Biases
- United States
- United States
Über
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 and was ranked as one of the TIME100 most influential companies of 2024. By bringing together CoreWeaves cloud infrastructure with Weights & Biases tools, were setting a new standard for how AI is built, trained, and scaled. The integration of our teams and technologies accelerates our shared mission to empower developers with the tools and infrastructure they need to push the boundaries of what AI can do. We support experiment tracking, model optimization, high-performance training clusters, agent building, and inference at scale all in one seamless platform. Weights & Biases has been trusted by over 1,500 organizations, including AstraZeneca, Canva, Cohere, OpenAI, Meta, Snowflake, Square, Toyota, and Wayve. Now, as part of CoreWeave, that impact is amplified across a broader ecosystem of AI innovators, researchers, and enterprises. What Youll Do
At marimo, were on a mission to make the worlds best open-source programming environment for working with data, together with a scalable, cloud-hosted counterpart. marimo reinvents the Python notebook it feels like a next-gen reactive Python notebook, but is stored as pure Python that can be versioned with Git, deployed as a data app, run as a script, and reused as a module. Incubated with scientists at Stanford, marimo is now used by leading companies, labs, and universities with millions of downloads and thousands of stars on our GitHub repository. On the marimo team, we believe that the tools we use shape the way we think. If youre passionate about developer tools, thrive in ambiguity, enjoy solving challenging engineering problems at scale, and yearn for greenfield problems, youll fit right in. The marimo core open source team develops and maintains the marimo open source notebook. This includes the editor frontend, the core dataflow compiler and runtime, an intermediary server, the marimo library, and an ecosystem of related projects (such as a VS Code extension and codemirror extensions). This team shepherds the future of one of Pythons fastest growing and most impactful open-source projects. As a senior software engineer on marimos core open source team, youll take ownership of projects across marimos open-source ecosystem, with emphasis on the frontend, servers, and editor extensions (such as VS Code and Cursor). You will design delightful and powerful interactive experiences in the marimo editor, keep the UI simple, and lead building scalable and performant data visualizations and a robust code editing experience. Youll work in the open, at a fast pace, engaging promptly and empathetically with a large community of users and contributors, triaging issues, and understanding unstated needs. Youll balance the needs of the community with the teams roadmap and vision. Who You Are 4+ years of experience in software engineering Proficiency in TypeScript with strong fundamentals that are language agnostic Experience building modern React applications Strong communication skills, written and verbal Preferred
A passion for and experience building developer tools, especially for AI, ML, or data A passion for working with data and empathy for practitioners and researchers in AI, ML, data engineering, NLP, or related fields An eye for visual and interaction design, with an emphasis on simplicity You enjoy connecting with users and the community daily Proficiency in Python, or willingness to learn Experience with AI engineering, including MCP and agents Experience with SQL, databases, and data engineering Experience working on open-source projects What We Offer
The base salary range for this role is $165,000 to $242,000. The starting salary will be determined based on job-related knowledge, skills, experience, and market location. We provide a discretionary bonus, equity awards, and a comprehensive benefits program (all based on eligibility). In addition to base salary, we offer a variety of benefits to support your needs, including: 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 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 daily in office and data center locations A casual work environment A culture focused on innovative disruption Our Workplace
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. New hires will attend onboarding at a hub 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 will receive consideration 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 if needed. 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, applicants must be a U.S. person or otherwise eligible to access the information. CoreWeave may decline to pursue export licensing processes as appropriate. #J-18808-Ljbffr
Sprachkenntnisse
- English
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