- 2024/04 - 現在 School of Social and Cultural Studies, Victoria University of Wellington, New Zealand Visiting Researcher
- 2023/08 - 現在 Waseda University
- 2021/04 - 現在 Meiji University School of Political Science and Economics Associate Professor
- 2016/04 - 現在 Waseda Institute of Latin American Studies (WILAS) Visiting Researcher
- 2016/04 - 2021/03 Meiji University School of Political Science and Economics Full-time lecturer
- 2014/07 - 2016/03 Waseda Institute of Latin American Studies (WILAS) Researcher
- 2014/04 - 2016/03 Waseda University Institute for Advanced Study Assistant Professor
- 2012/02 - 2014/02 Escuela de Estudios Hispanoamericanos, CSIC Visiting Researcher
- 2012/02 - 2014/02 Japan Society for the Promotion of Sicence Postdoctoral Fellow for Research Abroad
- 2008/04 - 2014/02 National Museum of Ethnology Department of Advanced Studies in Anthropology Visiting Researcher
- 2010/03 - 2011/03 National University of General San Martin (Argentina) Institute for Advanced Study Visiting Researcher
- 2008/04 - 2011/03 Japan Society for the Promotion of Science (JSPS) Research Fellow
- 2009/02 - 2009/02 Oxford University Campion Hall Academic Visitor
- 2008/04 - 2008/09 Research Fellow, Ibero-American Institute, Sophia University, Tokyo, Japan.
- 2005/04 - 2008/03 Sophia University Ibero-American Institute Researcher
- 2005/04 - 2008/03 Research Associate, Ibero-American Institute, Sophia University, Tokyo, Japan.
- 2006/03 - 2006/06 Brown University (USA) John Carter Brown Library Research Fellow
- 2006/03 - 2006/06 Research Fellow, John Carter Brown Library at Brown University, Providence (RI), USA.
- 2004/11 - 2004/11 Research Fellow, Jesuit Historical Institute at Rome, Italy.