- 2017/12 - 現在 The University of Tokyo, Graduate School of Arts and Sciences Professor
- 2008/10 - 2017/11 The University of Tokyo, Graduate School of Arts and Sciences Associate Professor
- 2006/04 - 2013/03 International Research Center for Japanese Studies Team Researcher
- 2012/04 - 2012/09 College of Intercultural Communication, Rikkyo University Part-time Lecturer
- 2007/04 - 2008/09 - Hitotsubashi University, Graduate School of Language and Society, Associate Professor
- 2007/03 - 2008/09 Hitotsubashi University Graduate School of Language and Society
- 2005/04 - 2008/09 The University of Tokyo College of Arts and Sciences
- 2005/04 - 2008/09 - University of Tokyo, Faculty of Arts and Sciences, Part-time Lecturer
- 2005/04 - 2007/03 Hitotsubashi University Graduate School of Language and Society
- 2005/04 - 2007/03 Hitotsubashi University, Graduate School of Language and Society, Assistant Professor
- 2004/11 - 2005/03 台湾中央研究院近代史研究所客員研究員
- 2004/11 - 2005/03 Academia Sinica, Taiwan, Institute of Modern History, Visiting Scholar
- 2001/04 - 2005/03 Hitotsubashi University Graduate School of Language and Society
- 2001/04 - 2005/03 Hitotsubashi University, Graduate School of Language and Society, Lecturer
- 2004/04 - 2004/10 ハノイ国家大学ベトナム学及び発展科学研究所客員研究員
- 2004/04 - 2004/10 Vietnam National University, Hanoi, Institute of Vietnamese Studies and Development Sciences, Visiting Scholar
- 2002/04 - 2004/09 The University of Tokyo Faculty of Letters
- 2001/04 - 2004/03 The University of Tokyo College of Arts and Sciences
- 2001/04 - 2004/03 University of Tokyo, Faculty of Arts and Sciences, Part-time Lecturer
- 2002/04 - 2002/09 University of Tokyo, Faculty of Letters, Part-time Lecturer
- 1999/04 - 2001/03 The University of Tokyo Graduate School of Arts and Sciences
- 1999/04 - 2001/03 University of Tokyo, Graduate School of Arts and Sciences, Research Assistant
- 1999/09 - 2000/03 Tokyo Woman's Christian University College of Culture and Communication