Common forum system for mobile applications
01 Feb 2014

Implemented in PHP, AngularJS, C# and JavaScript an Application which performs Bulletin board system for Mobile application. The project was included as a hybrid mobile app. I shipped this product to over 5,000,000 customers in Republic of Korea.


Fast zip code search engine
01 Jan 2014

Implemented in PHP an Application which performs find zip code by address. Changed system and wrote code to improve performance of this engine, by over 100% better than the legacy system.


Mobile advertise and statistics system
01 Oct 2013

Implemented in PHP, C#, JavaScript and Hadoop an Application which analytics to measure applications and advertisement data to gain business insights. Lead engineer on this product.


Infra service for ALTools
01 Aug 2010

Implemented in C#, PHP and Python a Application. Developed and managed updates for products that banners, advertisements system for applications with over 10 million users. Lead engineer on this product.


BizHard
01 Aug 2008

Cloud storage and business environment service. Implemented in C#, C++, Java, Python and many other languages an Application which performs a cloud storage service, mail hosting, messenger, forum and mobile for iOS and Android. Lead engineer on this product.


Human resource management system
01 Aug 2007

Implemented in C# an Application which performs HRM (Human resource management) and electronic approval system used by over 300 employees for the company.


Web application for game; Cabal Online
01 Jun 2005

Implemented in C# an Application which performs Member, Payment, Community and Forum services for Game. Lead engineer on this product.


Content provider site for DRM Service; ALX
01 Apr 2005

Implemented in C# an Application which performs DRM(Digital rights management), Payment and Member services development. Lead engineer on this product.


Online storage service; IDisk
01 Feb 2003

Web application development and data modeling for online storage solution. This service was provided by major portal of the Republic of Korea.