Customer Support, Professional Computer Company Limited (A joint venture company of Loxley & IBM Thailand), 1994-1995.
Lecturer in Mathematics at King Mongkut's University of Technology Thonburi , Bangkok, Thailand, Since 1997.
Long Term Visitor, Centre for Mathematics and its Applications, The Australian National University, Canberra, Australia, January 2002 - July 2002.
Assistant Professor in Applied Mathematics, Since 19 September 2006.
หัวหน้าสาขาคณิตศาสตร์ประยุกต์ ภาควิชาคณิตศาสตร์ มจธ. ตั้งแต่ 1 พ.ย. 2549 - 13 มี.ค. 2551
Associate Professor in Applied Mathematics, Since 1 October 2014.