Francisco Tolmasky
CEO Of RunKit at Stripe
San Francisco, California, United States
Summary
🤩
Rockstar🎓
Top SchoolFrancisco Tolmasky is a seasoned software leader and founder with 17 years of experience building developer-focused web platforms and tools. He helped shape Mobile Safari and WebKit at Apple, co-founded 280 North to pioneer browser-based application frameworks, and later led RunKit through acquisition by Stripe where he continues to reimagine how development is made accessible. Equally comfortable in engineering and product leadership, he has hands-on contributions to well-known open-source projects like Babel, improving parser accuracy and error reporting. His background spans low-level browser architecture to full-stack app frameworks and collaborative editors, reflecting deep expertise in web platform design. Based in San Francisco, he combines entrepreneurial grit with a habit of shipping practical developer tooling that lowers the barrier to experimentation.
17 years of coding experience
10 years of employment as a software developer
Bachelors, Computer Engineering Computer Science, Bachelors, Computer Engineering Computer Science at University of Southern CaliforniaBreaTroy High School
Stackoverflow
6,021reputation
678kreached
22answers
71questions
Github Skills (47)
parserator10
objective-c10
javascript10
parser10
testing10
macros10
solve10
objcective-c10
c1110
appkit10
solution10
cocoa10
c1710
compiler-compiler10
obj10
Programming languages (17)
Github contributions (5)
cappuccino/cappuccino
Sep 2008 - Aug 2011
Web Application Framework in JavaScript and Objective-J
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1278 commits in 2 years 11 months
Contributions summary:Francisco's commits primarily involve merging branches and resolving merge conflicts, indicating contributions to the core functionality. These changes reveal efforts in code modifications and integrating updates from other branches, suggesting an involvement in general code integration and maintenance. Specific files touched point to objective-j code.
javascriptweb-applicationframeworkweb-application-frameworkapplication-framework
babel/babel
Dec 2017 - Jul 2022
🐠 Babel is a compiler for writing next generation JavaScript.
Role in this project:Back-end Developer
Back-end DeveloperContributions:81 reviews, 7 commits, 10 PRs in 4 years 8 months
Contributions summary:Francisco primarily focused on improving the Babel parser, as evidenced by the commit messages. Their contributions include fixing bugs related to location tracking in errors, exposing expression values in DirectiveLiteral nodes, and refactoring code to improve the parser's error handling. They also worked on the serialization and deserialization of parser-related data structures for testing purposes. The user's work ensures more accurate error reporting and contributes to the overall stability and maintainability of the Babel compiler.
next-generationbabelflavortownjavascriptast
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