Steve Sewell
Co-Founder, CEO at Builder.io
San Francisco, California, United States
Summary
🤩
Rockstar🎓
Top SchoolSteve Sewell is a founder and product-driven engineering leader with 12 years of experience building developer-facing web products from startup hits to platform-scale tools. As Co‑Founder and CEO of Builder.io, he leads a team that turns designs into live pages quickly, while remaining hands-on in front-end development across projects like Builder, Mitosis, and the instant-loading Qwik framework. His background includes scaling web engineering at ShopStyle and an earlier exit from PICT, plus a prior consumer success with a #1 iOS app at Qanvis, showing a rare mix of product intuition and execution. Steve’s open-source contributions focus on UI, cross-framework components, and tooling that improves design-to-code workflows and mobile responsiveness. Based in San Francisco and educated at UC Berkeley, he combines entrepreneurship with day-to-day coding fluency, often shipping fixes and UX improvements himself. Notably, he bridges visual editing platforms and headless architectures, making complex integrations (Shopify, Figma, multi-framework compilation) feel seamless for teams.
12 years of coding experience
5 years of employment as a software developer
University of California, Berkeley
Github Skills (20)
application-framework10
javascript10
css10
app-framework10
typescript10
web-components10
webpages10
web-content10
front-end-development10
typescript-types10
html10
web-framework10
typescripts10
react10
jsx10
Programming languages (9)
Github contributions (5)
BuilderIO/mitosis
Nov 2020 - Oct 2022
Write components once, run everywhere. Compiles to React, Vue, Qwik, Solid, Angular, Svelte, and more.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:173 reviews, 692 commits, 187 PRs in 1 year 11 months
Contributions summary:Steve primarily contributed to the UI components of the Mitosis framework, making updates and enhancements. Their work involved code refinements within the test files, and included fixes and adjustments to the codebase related to various component libraries. They made modifications to files related to testing and to handle code compilation for multiple frameworks.
jsx-litesolidjsvue-reactno-codecompiler
BuilderIO/figma-html
Aug 2019 - Aug 2022
Builder.io for Figma: AI generation, export to code, import from web
Role in this project:Front-end Developer
Front-end DeveloperContributions:6 reviews, 110 commits, 30 PRs in 3 years
Contributions summary:Steve primarily contributed to the UI development within the Figma-HTML repository. Their commits focused on implementing new UI components, styling, and improving the overall user experience of the Figma plugin. They made several updates to the UI, including the addition of interactive elements and features to enhance the user interface of the tool. They also focused on fixing the SVG import issue and other styling issues.
jsx-litevue-reactno-codevuecss
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