Doctor of Philosophy in Computer Science, University Siegen, Germany, 2004.
Researcher University Siegen, 2001—2004. Senior engineer DASAN Networks, Seoul, Republic of Korea, 2005—2006. Invited professor, Christian Science department Catholic University, 2007—2008.
Technical director Testboss Soft Company Limited., since 2008. Professor Duksung Women's University, since 2009. Consultant Open Standards & Internet Association, Seoul, since 2007.
With Republic of Korea Army, 1992-1994.
Member of Institute of Electronics, Information and Communication Engineers (Japan).
Married Kangseol Kim. Children: Seohyun, Sinho.