- 2015/04 - Chuo University Faculty of Policy Studies Professor
- 2011/04 - 2015/03 Butsuryo College of Osaka Professor
- 2009/04 - 2014/03 大阪大谷大学 人間社会学部 非常勤講師
- 2011/04 - 2013/03 堺市観光文化局 国際部アセアン担当 参与
- 2009/04 - 2011/03 堺市市長公室 国際部アセアン担当 参与
- 2004/10 - 2009/03 "National University, Fakultas Sastra Dosen Tamu(foreign professor)"
- 2004/10 - 2009/03 National University, Fakultas Sastra Dosen Tamu(foreign professor)
- 2003/06 - 2004/09 "De La Salle University, Faculuty of Arts, Associate Professor"
- 2003/06 - 2004/09 De La Salle University, Faculuty of Arts, Associate Professor
- 2003/08 - 2004/08 "International School Manila, High school part-time teacher"
- 2003/08 - 2004/08 International School Manila, High school part-time teacher
- 2000/08 - 2003/06 "International School Manila, High school teacher"
- 2000/08 - 2003/06 International School Manila, High school teacher
- 2003/01 - 2003/05 "De La Salle University, Part time lecturer"
- 2003/01 - 2003/05 De La Salle University, Part time lecturer
- 1991/08 - 1994/06 "Jakarta International School, Jakarta, High school teacher"
- 1991/08 - 1994/06 Jakarta International School, Jakarta, High school teacher
- 1990/08 - 1991/06 "Highline Community College, Assistant"
- 1990/08 - 1991/06 Highline Community College, Assistant