A software engineer in Tokyo, made in Kyoto.

e-mail → okuryu@okuryu.com.


Softwear Engineer, Yahoo Japan Corporation


I'm currently working on the core technology products for internal platform developers at Yahoo Japan Corporation.


Kyoto University of Arts and Design


Bachelor, Photography


The 10th Japan OSS Incentive Award


I was awarded the 10th Japan OSS Incentive Award mainly because my contributions to open sourced producs by Yahoo was evaluated. See also: http://ossforum.jp/en/node/1327

Life Experience



My first film camera was LOMO LC-A bought in 2002. I've been started to learn photogoraphy, arts, and design at the university in 2003. After graduation, I chose an unrelated work, but I keep taking photos as part of my life. Several photos are available on my Flickr, Instagram, and Medium.

Open Source


I joined GitHub.com and started to contribute to open source community in 2008. I learned many things how softwares built by the people and community in the world. See also my GitHub and Open Source Project section for more details as below.

Open Source Project

Contributor, FormatJS


FormatJS is the suite of internationalization in JavaScript developed by Yahoo. They are built on top of standard specification called ECMAScript 402. I started to contribute to FormatJS in 2014.

Maintainer, YUIDoc


YUIDoc is an open sourced tools that make JavaScript API documentations developed by Yahoo. It was started to develop as part of YUI products. And I've promoted a maintainer of YUIDoc in 2014.

Committer, YUI


YUI is an open sourced JavaScript framework and library developed by Yahoo. It was open sourced in 2006. I've been started to contribute to YUI since 2011, and promoted a committer in 2013. In 2014, it was announced that active development of YUI by Yahoo would end.