- 2021/04 - 現在 Nara Institute of Science and Technology
- 2012 - 現在 University of California, Davis Department of Microbiology and Molecular Genetics Visiting Professor
- 2018/04 - 2021/03 Nara Institute of Science and Technology Division of Biological Science Professor
- 2011 - 2018 Nara Institute of Science and Technology Graduate School of Biological Sciences
- 2008 - 2011 University of California, Davis, Cancer Center Member
- 2008 - 2011 University of California, Davis Department of Microbiology Professor
- 2008 - 2011 Agricultural Experiment Station, University of California, Davis Microbiologist
- 2002 - 2008 University of California, Davis, Cancer Center Associate Member
- 2002 - 2008 University of California, Davis Department of Microbiology Associate Professor (with tenure)
- 2002 - 2008 Agricultural Experiment Station, University of California, Davis Associate Microbiologist
- 1998 - 2002 University of California, Davis Department of Microbiology Assistant Professor
- 1998 - 2002 Agricultural Experiment Station, University of California, Davis Assistant Microbiologist
- 1992 - 1997 The Scripps Research Institute Department of Molecular Biology Postdoctoral Scholar
- 1992 - Kyoto University Graduate School of Science
- 1987 - Kyoto University Faculty of Science