Senior Software Engineer (Core Open-Source, Marimo)

About this role

• As a senior software engineer on marimo’s core open source team, you’ll take ownership of projects across marimo’s open-source ecosystem, focusing on marimo’s backend and its Python ecosystem. You will influence critical decisions on library design, making sure our APIs remain simple yet composable; you’ll also design new capabilities that push the boundaries of interactive computing without complicating the user experience
• You’ll work in the open, at a fast pace — engaging 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. All the while, you’ll exercise judgment to balance the needs of our community with our own roadmap and vision

### Benefits

• 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
• Tuition Reimbursement
• Health Savings Account
• Family-Forming support provided by Carrot
• Paid Parental Leave
• Mental Wellness Benefits through Spring Health
• Ability to Participate in Employee Stock Purchase Program (ESPP)
• 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 work culture focused on innovative disruption
• A casual work environment- 4+ years of experience in software engineering
• Proficiency in computer systems, including parallel computing (threading, multiprocessing), concurrency (asynchronous programming), basic networking/inter-process communication
• Proficiency in Python, with strong fundamentals that are language agnostic
• Experience in library design and/or open-source development
• Strong communication skills, written and verbal
• A passion for and experience building developer tools, especially for AI, ML, or data
• An eye for visu...