| Professor | Department of Computer Science and Information Engineering, National Changhua University of Education | Feb. 2012 - Present |
| Associate Professor | Department of Computer Science and Information Engineering, National Changhua University of Education | Aug. 2004 - Jan. 2012 |
| Chair | Department of Computer Science and Information Engineering, National Changhua University of Education | Aug. 2007 - July 2010 |
| Director | Computer Center, National Changhua University of Education | Aug. 2005 - July 2007 |
| Assistant Professor | Department of Computer Science and Information Engineering, National Changhua University of Education | Aug. 2002 - July 2004 |
| Assistant Professor | Department of Electronic Engineering, National Changhua University of Education | Agu. 2001 - July 2002 |
| Assistant Professor | Graduate Institute of Electrical Engineering, National Changhua University of Education | Feb. 2001 - July 2001 |
| Assistant Professor | Department of Industrial Education & Technology, National Changhua University of Education | Aug. 2000 - Jan. 2001 |
| Section Chief | Section of information System, Computer Center, National Changhua University of Education | July 2000 – July 2002 |