He has extensive experience building enterprise development framework in JavaScript and Java. And he is the author of Beginning AngularJS (http://wikibook.co.kr/beginning-angularjs/) from wikibook in Korea. He currently works at Bitfinder Inc and he leads IoT event processor development and web front-end development. Also he loves to have a technical discussion with his team member and discover a solution or new way of building up software.Previously, He worked at kt and led Iot Platform development. Also he had the IAESTE traineeship in the Czech Republic as a JavaScript Developer.