- 2022/04 - 現在 Sophia University Center for Global Education and Discovery Professor
- 2022/04 - 現在 Sophia University Graduate School of Global Studies Master's Program in international Cooperation Studies Professor
- 2021/04 - 2022/03 Sophia University Graduate School of Global Studies, Program in International Cooperation Studies Associate Professor
- 2015/04 - 2022/03 Sophia University Center for Global Education and Discovery Associate Professor
- 2019/09 - 2020/03 Visiting scholar, University of Hawai'i at Manoa (Fulbright Scholar Program)
- 2013/04 - 2015/03 Sophia University Assistant Professor, Center for Global Discovery
- 2013/04 - 2014/03 Toyo University Part-time instructor
- 2012/10 - 2013/03 St. Margaret's Junior College Part-time instructor
- 2012/04 - 2013/03 Toyo University Faculty of Sociology, Assistant Professor
- 2010/04 - 2012/03 Hokkaido University Center for Ainu and Indigenous Studies Postdoctoral Researcher
- 2009/06 - 2010/03 Hokkaido University Center for Experimental Research in Social Sciences Postdoctoral Researcher
- 2008/10 - 2009/05 East Asian Studies, University of California, Berkeley Junior Specialist
- 2006/08 - 2009/05 University of California, Berkeley Berkeley Language Center Junior Specialist
- 2005/10 - 2006/03 Faculty of Foreign Studies, Sophia University Teaching Assistant
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The Japanese Association for American Studies
, The Japan Association for Latin American Studies
, The Japanese Society of Cultural Anthropology
, Native American and Indigenous Studies Association
, Association for Borderlands Studies