Vice Rector for Academic Affairs, Thammasart University

Director of Regional English Language Office

Director of Chulalongkorn University Language Institute

Assistant to Deputy Director for International Affairs,  Chulalongkorn University Language Institute

Director of M.A. Program in English Language Teaching, Language Institute Thammasat University

Vice Dean for International Affairs, Kasetsart University

Brigham Young University–Hawaii, USA

President and Founder of Xreading.com

Mahasarakham University

University of Hawai'i at Mānoa, USA

Notre Dame Seishin University, Japan

Director of English Language Institute, HCEMC OBEC, Ministry Of Education

Chiang Mai University

Director of Language Institute Thammasat University Advanced Center for Testings

Dean of International College for Sustainability Studies, Srinakharinwirot University and President of Thailand TESOL

Kyoto Sangyo University, Japan

Dean of Faculty of Humanities, Kasetsart University

Dean of Faculty of Education, Kasetsart University