- 2023/04 - 現在 The University of Tokyo UTOPIA Center Vice Director
- 2022/04 - 現在 The Institute of Medical Science, The University of Tokyo International Vaccine Design Center Director
- 2019/01 - 現在 The Institute of Medical Science, The University of Tokyo Division of Vaccine Science, Department of Microbiology and Immunology Professor
- 2010/04 - 現在 Lab. Vaccine Science, WPI Immunology Frontier Research Center (iFREC), Osaka University Visiting Professor
- 2019/04 - 2022/03 The Institute of Medical Science, The University of Tokyo International Research and Development Center for Mucosal Vaccines Director
- 2017/04 - 2018/12 National Institutes of Biomedical Innovation, Health and Nutrition Center for Vaccine and Adjuvant Research Director
- 2015/10 - 2017/03 Japan Agency for Medical Research and Development Department of Research Promotion Managing Director
- 2015/04 - 2015/09 Natioanl Institutes of Biomedical Innvation, Health and Nutrition Center for Drug Design Research Director
- 2010/04 - 2015/03 National institute of Biomedical innovation (NIBIO) Lab. Adjuvant Innovation, Project Leader
- 2007/10 - 2010/03 WPI immunology Frontier Rsearch Center (iFREC), Osaka University Associate Professor
- 2006/12 - 2010/03 Research Institute for Microbial Diseases, Osaka University Associate Professor
- 2003/09 - 2007/10 JST ERATO AKIRA innate immunity project Group Leader
- 2000/03 - 2003/08 Division of Viral Products, CBER, OVRR, FDA IND reviewer
- 1996/09 - 2000/02 CBER, OVRR, FDA,, US. Gov Visiting Scientist
- 1995/04 - 1996/08 Dep. of Anesthesiology
- 1995/04 - 1996/03 Yokoyama City municipal hospital Anesthesiologist
- 1993/04 - 1995/03 Yokohama City University Hospital Resident