Joe Vilches is a Senior Software Engineer at Meta with nine years of experience building performant, reliable systems and expanding React Native’s capabilities. Based in New York, he has driven Marketplace Product Infrastructure as a tech lead, focusing on performance and reliability at scale. He is an active open-source contributor in Meta’s React org, notably improving the Yoga layout engine and fixing subtle flexbox and padding/margin bugs that bridged differences between web standards and native frameworks. His iOS work in React Native includes rendering fixes for shadows, transforms, and blend modes, demonstrating a strong eye for cross-platform UI correctness and performance. With a BS in Mathematics and Computer Science from UT Austin and past mentoring experience teaching data structures, he pairs deep algorithmic understanding with pragmatic engineering. Colleagues rely on him for tough layout edge cases and quality-of-life tooling improvements that make debugging and testing more robust.
9 years of coding experience
3 years of employment as a software developer
Bachelor of Science - BS, Mathematics, Computer Science, Bachelor of Science - BS, Mathematics, Computer Science at The University of Texas at Austin
Yoga is an embeddable layout engine targeting web standards.
Role in this project:
Full-stack Developer
Contributions:4 reviews, 119 PRs, 1 branch in 1 year 2 months
Contributions summary:Joe primarily contributed to the Yoga layout engine, enhancing its capabilities with new tests and addressing existing issues related to flex direction and how it interacts with properties like margin, border, and padding. The user added tests to confirm that the engine correctly handles these properties with row-reverse flex direction, fixing bugs that swapped or misapplied these properties. The user also added quality of life improvements to the gentest script used for generating tests, to aid in debugging the fixtures.
A framework for building native applications using React
Role in this project:
Mobile Developer (iOS)
Contributions:16 reviews, 149 PRs, 42 comments in 1 year 5 months
Contributions summary:Joe contributed extensively to the React Native framework, specifically focusing on enhancements to the visual appearance of UI components. They implemented the correct behavior for box shadows and ensured proper rendering with scaling transforms and rounded corners. They also addressed inconsistencies with the handling of text links. Furthermore, the user's work encompassed implementing the functionality for filters, mix blend modes and ensuring those features were performant and correctly implemented on the iOS platform.
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