Yehuda Katz
Co-founder at Tilde Inc
Lake Oswego, Oregon, United States
Summary
🤩
Rockstar🎓
Top SchoolYehuda Katz is a seasoned software entrepreneur and open-source leader with nearly two decades of experience building web frameworks, developer tools, and language ecosystems. As co-founder of Tilde and a long-time core contributor to projects like Ember.js, jQuery, Rails, and Rust tooling, he blends deep front-end expertise with systems-level Ruby and Rust work. He’s an author of influential technical books (including jQuery in Action and Rails 3 in Action) and a former core team member of both Ruby on Rails and the Rust project, reflecting rare cross-language fluency. His recent contributions span everything from improving Ruby FFI tests and Rust-based native extensions to refining build and cross-platform tooling in Yarn and Cargo. Based in Lake Oswego, Oregon, Yehuda pairs product-minded engineering with standards work (TC39 and past W3C TAG membership), helping shape both implementations and language direction. One less obvious strength: he frequently improves reliability and developer experience via testing, build automation, and tooling tweaks that pay dividends across large ecosystems.
19 years of coding experience
6 years of employment as a software developer
City University of New York-Brooklyn College
Stackoverflow
28,645reputation
1.3mreached
118answers
10questions
queue
top-5%
animation
top-5%
ruby
top-1%
javascript
top-1%
jquery
top-1%
reflection
top-5%
Github Skills (128)
dependency-management10
tooling10
programming-language10
controller10
package-management10
toolbox10
ui-components10
testing10
data-manipulation10
windows10
command-line-interface10
render10
cffi10
ruby10
automation10
Programming languages (20)
Github contributions (5)
glimmerjs/glimmer-vm
Sep 2015 - Oct 2020
Role in this project:
Front-end Developer
Front-end DeveloperContributions:73 reviews, 489 commits, 108 PRs in 5 years 2 months
Contributions summary:Yehuda's commits primarily focus on making modifiers work and progress on dirtying, which are related to the core functionality of the Glimmer.js virtual machine and its runtime aspects, especially related to component updates and rendering. These changes involved code modifications to the `htmlbars-runtime` package, including modifications to hooks, template management, and the implementation of text and comment nodes. The work also involved addressing simple compiler tests for append mode morphs and integration test modifications indicating deep involvement in Glimmer.js's rendering pipeline.
glimmerjsemberjstypescript
tildeio/helix
Nov 2015 - Jul 2019
Native Ruby extensions without fear
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:40 commits, 19 PRs, 30 pushes in 3 years 9 months
Contributions summary:Yehuda contributed significantly to the `helix` repository, which focuses on native Ruby extensions. Their work involved adding support for Rust return types by modifying core macros and coercion logic. They also implemented examples, including console and duration functionalities, and refactored codegen modules. This suggests a focus on improving the framework's capabilities and usability.
extensionsruby
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