Ryuichi Okumura
Software Engineer at LY Corporation
Chiyoda, Japan
Summary
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Rockstar🎓
Top SchoolRyuichi Okumura is a seasoned software engineer with 15 years of experience, most of it spent building and maintaining large-scale web platform components at Yahoo! JAPAN and currently contributing at LY Corporation. He spans full-stack and front-end work, with notable open-source contributions to widely used projects like FormatJS and YUI where he improved build tooling, code quality, localization, and documentation generation. Ryuichi’s pragmatic focus on maintainability shows in dependency upgrades, refactors, and careful handling of serialization edge cases (e.g., regexp, bigint, undefined) across libraries. Based in Chiyoda, Japan, he combines production-grade engineering with active community work—contributing to Node.js and other projects—reflecting a developer who values both product stability and ecosystem health.
15 years of coding experience
16 years of employment as a software developer
Kyoto University of Art & Design
English, Japanese
Stackoverflow
221reputation
4kreached
9answers
2questions
Github Skills (26)
json10
javascript10
webpages10
regular-expression10
localization10
rollupjs10
yui10
react10
documentation10
testing9
rails-i18n9
handlebars9
web-content9
internationalization9
globalization9
Programming languages (14)
Github contributions (5)
yahoo/serialize-javascript
Jul 2017 - Jan 2023
Serialize JavaScript to a superset of JSON that includes regular expressions and functions.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:18 releases, 35 reviews, 40 commits in 5 years 7 months
Contributions summary:Ryuichi primarily contributed to the `serialize-javascript` library by addressing bug fixes and improvements. Their work involved reverting changes related to serializing 'undefined' and 'bigint' values, indicating a focus on core functionality and data type handling. They also made version updates and addressed issues related to regular expression serialization, demonstrating a commitment to maintaining and refining the library's capabilities.
regular-expressionsjavascriptserializationregularserialize
yui/yuidoc
May 2012 - Apr 2017
YUI Javascript Documentation Tool
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:7 releases, 180 commits, 87 PRs in 5 years
Contributions summary:Ryuichi primarily focused on improving the YUI Javascript Documentation Tool. Their contributions include refactoring code to use `readableStream.pipe` instead of `util.pump`. They also added tests for the Y.Files API and implemented new features related to parsing and documentation generation, including support for parameter documentation and rest parameters. Finally, they merged in several branch updates for improved documentation.
jsdocjavascript-documentationjavascriptdocumentation-toolyui
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