Tsutomu Kawamura
Owner at Japanese Open Business Software Association
Chiyoda, Japan
Summary
🤩
Rockstar🎓
Top SchoolTsutomu Kawamura is a seasoned web application developer, database administrator, and designer with 17 years of experience building business applications and web services from Tokyo’s Chiyoda ward. As owner of multiple ventures including a coworking space (Shimokitazawa OpenSource Cafe) and CogniTom Academic Design, he blends hands-on engineering with community-building and open source education. He specializes in PHP, JavaScript, HTML/CSS, MySQL and SugarCRM, and brings visual design skills with tools like Illustrator and Fireworks to create polished UIs. An active open-source contributor, he improved Riot.js’s compiler to support scoped style handling and added robust tests, and enhanced print-focused Paper CSS with CLI-driven template and PDF workflows. He also co-founded Librize to promote book sharing and serves as chairman of the Japanese Open Business Software Association, reflecting a long-standing commitment to open culture and collaborative projects. His background in Cognitive Information Science informs a user-centered approach to interface and system design.
17 years of coding experience
認知情報科学, Cognitive Information Science, 認知情報科学, Cognitive Information Science at 千葉大学
Stackoverflow
1,101reputation
34kreached
15answers
1question
concatenation
top-5%
javascript
top-5%
gulp
top-5%
Github Skills (28)
printing10
application-framework10
print10
javascript10
clientside10
css10
app-framework10
web-components10
html10
web-framework10
command-line-interface9
concatenation9
gulp9
command-line9
compiler-compiler9
Programming languages (10)
Github contributions (5)
cognitom/paper-css
Oct 2015 - Aug 2018
Paper CSS for happy printing
Role in this project:
Front-end Developer
Front-end DeveloperContributions:58 commits, 7 PRs, 29 pushes in 2 years 10 months
Contributions summary:Tsutomu primarily focused on modifying and extending the existing CSS framework for print-friendly documents. They updated example files, particularly modifying paths and adding examples of various document sizes and layouts. The user integrated a CDN version of the CSS library into the examples, and added new examples to illustrate the letter and legal size usage. Additionally, the user implemented a CLI for template creation, preview, and PDF export of the CSS styling.
csshappyprintingpaper-css
riot/riot
Feb 2015 - Feb 2017
Simple and elegant component-based UI library
Role in this project:Front-end Developer
Front-end DeveloperContributions:101 commits, 75 PRs, 37 pushes in 2 years
Contributions summary:Tsutomu primarily focused on developing and refining the Riot.js UI library. They modified the compiler to handle styles within the `<style>` tag, and implemented the injection of styles into the HTML. They also fixed regular expressions and backslash escaping, improving the compiler's functionality. Several commits demonstrate work on tests, with the addition of a style tag test and refactoring the tests and related files.
customtagsreactcomponent-basedclient-sidejavascript
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