Led development, QA and design team to build entire mobile payment system and launch service within extremely aggressive time line (4 months after VC-funding).• Authored and filed three patents related to unique mobile payment systems and methodologies.• Designed and Implemented of Enterprise Service and Middleware (BPM, CORBA and two CORBA services).• Possesses strong experiences in Enterprise/Infrastructure Platform architecture and implementation.• Set up and managed software engineering teams in various international locations (US, China and Taiwan).• Awarded “IT Mentor of Year” by Minister of Information and Communication of South Korea.• Architected and built several entire mobile payment and billing systems over 5+ years.• Experienced in Cloud and Clustering based system• Expert in framework design and development• Experienced in enterprise application architecture consulting.• Experienced in software development methodology consulting (RUP, CBD and XP).• Good understanding of software design practice (architecture, design pattern, refactoring, TDD).• System programming (Win32, Unix based)• Led and mentored developer communities (Chairman of Java User Group, largest software developers’ group in Korea, for two years)• Authored numerous on/off-line article publications• Speaker and expert lecturer at developer conferences- Publications• Offline: More than 30 columns on ‘Micro Software (Computer Science magazine)’• Online: So many columns on IBM DeveloperWorks (Korea), Sun Developer Network (Korea) and ZDNet Korea- Lectures(1) Java Community Organization Conference (audience: more than two thousand)• Struts Architecture (February 2003)• Enterprise J2EE Pattern (February 2004)• JBoss Subsystems (February 2006)• Pattern Language (February 2006)(2) Red Hat Java Developers Seminar• JBoss Architecture (2007)(3) Objectworld Seminar• Target for Refactoring (April 2002)• Patterns of Enterprise Application Architecture (April 2005)