Senior Developer Relations Engineer - Marimo

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.

About Marimo:

At Marimo, we're building the best open-source environment for working with data, alongside a world-class cloud platform designed for scale, performance, and collaboration.

Marimo reimagines the Python notebook from first principles. It combines the interactivity of a next-generation reactive notebook with the flexibility of pure Python: notebooks can be versioned with Git, deployed as data applications, executed as scripts, and imported as reusable modules. Originally incubated with scientists at Stanford, marimo is now used by leading companies, research labs, and universities worldwide, with millions of downloads and more than 17,000 GitHub stars.

We believe that the tools we use shape the way we think. Better tools lead to better ideas, faster iteration, and deeper understanding. If you're passionate about developer tools, thrive in ambiguous environments, enjoy tackling challenging engineering problems, and are excited by greenfield opportunities, you'll fit right in.

About the Team:

The Marimo growth team is responsible for managing and growing the marimo community, playing a critical role in our goal of making marimo the standard Python used by millions of developers around the world. The Marimo community is diverse, including AI/ML developers, backend developers, security engineers, data engineers, data scientists, natural scientists, professors, students, and more. The growth team's mandate is to build scalable bottoms-up growth motions across these subcommunities, helping them transform their workflows with our next-generation notebook and bringing back feedback to the engineering team. You will be given high autonomy, and will be trusted to make a large impact.

About the Role:

As a Senior Developer Relations Engineer on Marimo's growth team, you will: 

• Work smart (and hard) to find high-leverage, scalable, and measurable ways to grow usage, ranging from growth-related software engineering to content creation 
• Serving as a technical bridge between Marimo and our users, maintaining relationships with key champions and community members
• Organize and regularly attend events in the SF Bay Area (and around the US when needed)
• Build and nurture relationships with partner open-source projects and DevRel teams to co-create content, integrations, and joint community initiatives

This role is only open for candidates in San Francisco.

Who You Are:

• 2+ years of experience in software engineering
• 2+ years of experience in developer relations and growth
• Proficiency in Python, with strong fundamentals that are language agnostic
• Technical background in AI, ML, and data science
• Strong communication skills, written and verbal, with a proven track record

Preferred:

• Experience with AI coding models
• Experience with growing open-source communities
• Experience with Python notebooks
• Experience with developer tools
• A relentless focus on data-driven methods and efficiency

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 to engage with open-source communities
• You’re an expert in tactically growing user bases
• You're metric-driven
• You thrive in high ownership roles

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 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. The benefits below reflect our US-based offerings; for roles in other locations, benefits vary and are shared during the hiring process. These include:

• 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

California Applicants

California Consumer Privacy Act 

Equal Opportunity & Accommodations

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.