| Aug 2008 - | National Electronics and Computer Technology Center (NECTEC), Bangkok, Thailand. | Assistant Executive Director |
| Oct 2007 - | Information and Mobile Application Program (IMA), Cluster and Program Management Office (CPMO), National Science and Technology Development Agency (NSTDA), Bangkok, Thailand. | Director |
| Apr 2004 - | Thai Computational Linguistics Laboratory (TCL), National Institute of Information and Communications Technology (NICT), Bangkok, Thailand. | Director |
| May 2003 - Mar 2004 | Thai Computational Linguistics Laboratory (TCL), Communications Research Laboratory (CRL), Bangkok, Thailand. | Director |
| Jan 2001 - Apr 2003 | Information Research and Development Division (iTech), National Electronics and Computer Technology Center (NECTEC), Ministry of Science, Technology and Environment, Bangkok, Thailand. | Director |
| Apr 2000 - Dec 2000 | Information Research and Development Division (iTech), National Electronics and Computer Technology Center (NECTEC), Ministry of Science, Technology and Environment, Bangkok, Thailand. | Acting Director |
| Apr 1999 - Mar 2000 | Software and Language Engineering Laboratory (SLL), National Electronics and Computer Technology Center (NECTEC), Ministry of Science, Technology and Environment, Bangkok, Thailand. | Researcher |
| Aug 1999 - Dec 1999 | Universal Networking Language (UNL), United Nations University (UNU), Tokyo, Japan. | Visiting lecturer |
| Oct 1998 - Mar 1999 | Machine Understanding Division, Electrotechnical Laboratory (ETL), Tsukuba, Japan. | Visiting researcher |
| Sep 1992 - Oct 1995 | Linguistics and Knowledge Science Laboratory (LINKS), National Electronics and Computer Technology Center (NECTEC), Ministry of Science, Technology and Environment, Bangkok, Thailand. | Chief researcher |
| Oct 1988 - Aug 1992 | 2nd Research Department. Research & Development Division, Machine Translation System Laboratory, Center of the International Cooperation for Computerization (CICC), Tokyo, Japan. | Researcher |
| Oct 1988 - Aug 1992 | Application Systems Department, EDP Systems Engineering Division, NEC Corporation, Tokyo , Japan. | Engineer |
| Apr 1986 - Sep 1988 | Department of System Engineering, NEC Engineering (Thailand) Co.,Ltd, Bangkok, Thailand. | Engineer |
| Oct 1995 - Sep 1998 | Department of Computer Science, Graduate School of Information Science and Engineering, Tokyo Institute of Technology, Tokyo, Japan. | D.Eng. |
| Apr 1984 - Mar 1986 | System Engineering Research Laboratory, Graduate School of Engineering, Kyoto University, Kyoto, Japan. | M.Eng. |
| Apr 1980 - Mar 1984 | Department of Precision Mechanics, Faculty of Engineering, Kyoto University, Kyoto, Japan. | B.Eng. |
| Apr 1979 - Mar 1980 | Japanese Language School, Attached to the Department of Foreign Languages, Tokyo University for Foreign Studies, Tokyo, Japan. | Certificate |
| Jun 1978 - Mar 1979 | Department of Pharmaceutical Science, Chulalongkorn University, Bangkok, Thailand. | -- |
| Jun 1976 - Mar 1978 | Hatyai Wittayalai High School, Songkhla, Thailand. | M. 4-5 |
| Jun 1973 - Mar 1976 | Hatyai Wittayalai Secondary School, Songkhla, Thailand. | M. 1-3 |
| Darun Suksa School, Songkhla, Thailand. | P. 5-7 | |
| Kurumit Wittaya School, Songkhla, Thailand. | P. 1-4 |