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Leo Horie
Staff Software Engineer at Uber, author of Mithril.js
Leo Horie is a seasoned developer with over a decade of experience in the web development industry. He currently works as a Staff Software Engineer at Uber, a position he has held since May 2017.3 Leo is widely recognized as the author of Mithril.js, a popular JavaScript framework.12
Career Highlights
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Uber (May 2017 - Present): As a Staff Software Engineer, Leo has spearheaded several significant projects:
- Designed and developed Jazelle, an open-sourced monorepo management system based on Yarn and Bazel.3
- Developed and maintained Fusion.js, a full-stack open-source framework used by hundreds of web projects at Uber.35
- Improved engineering productivity through automation tooling and comprehensive documentation.3
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Human Design (October 2014 - April 2017): Served as a Senior Full Stack Engineer, leading development on various web and native mobile applications.3
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Klick Health (January 2006 - October 2014): Worked as a Senior Web Architect and Senior Web Developer, developing interactive websites and applications for major companies.3
Education and Skills
Leo studied Electronics and Communications Engineering at Humber College from 2000 to 2003.3 He is proficient in multiple programming languages and frameworks, including .NET, ActionScript, Angular.js, Backbone.js, and more.1
Notable Contributions
Leo is known for his work on open-source projects, particularly:
- Mithril.js: A JavaScript framework he authored.2
- Fusion.js: An open-source web framework developed at Uber, which he helped create and maintain.45
Leo Horie's expertise in web development, combined with his contributions to open-source projects and his role at Uber, has established him as a respected figure in the software engineering community.

![[Web Dev] Web Development at Uber - Ryan Sokol - YouTube](https://img.youtube.com/vi/Qfy7efhNu_k/maxresdefault.jpg)
