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Weights & Biases · 1 day ago

Senior Software Engineer, Core Open-Source (frontend/fullstack) - Weights & Biases

New York, NY

Full-time

Hybrid

Mid, Senior Level

$165K/yr - $242K/yr

4+ years exp

Weights & Biases, part of CoreWeave, is seeking a Senior Software Engineer for their core open-source team to enhance their innovative marimo programming environment. The role involves taking ownership of projects related to frontend development, servers, and editor extensions while engaging with a vibrant community of users and contributors.

Artificial Intelligence (AI)Data VisualizationDeveloper ToolsGenerative AIMachine Learning

Comp. & Benefits

No H1B

U.S. Citizen Only

Responsibilities

Take ownership of projects across marimo's open-source ecosystem, with an emphasis on marimo's frontend, servers, and editor extensions (such as VS Code and Cursor)

Design delightful and powerful interactive experiences in the marimo editor, while making sure that the user interface remains simple

Lead building scalable and performant data visualizations, a robust code editing experience, and other related tasks

Engage promptly and empathetically with a large and vocal community of users and contributors, triaging their issues and reading between the lines to understand their unstated needs

Exercise judgment to balance the needs of our community with the team's roadmap, opinionated vision, and taste

Qualification

TypescriptReactPythonAI engineeringSQLOpen-source projectsEmpathyVisual designCommunication skills

Required

4+ years of experience in software engineering

Proficiency in Typescript, 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, with the ability to empathize with practitioners and researchers in AI, ML, data engineering, NLP, or other quantitative work

An eye for visual and interaction design, with an emphasis on simplicity

You find enjoyment in connecting with users and the community daily

Proficiency in Python, or a willingness to learn

Experience with AI engineering, including MCP and agents

Experience with SQL, databases, and data engineering

Experience working on open-source projects