| 1984-1988: | Researcher, Research Laboratories for Diagnostics, Mochida Pharmaceutical Co., Ltd |
| 1988-1994: | Researcher, The Institute for Future Technology (IFTECH : Think-Tank) |
| 1994-2005: | Senior Researcher, IFTECH |
| 2005-2007: | Professor, Graduate School of Engineering Management, Shibaura Institute of Technology |
| 2007-present: | Professor, GRIPS |
| 2003-present: | Visiting Researcher, National Institute of Science and Technology Policy |
| 2005-2006: | Adjunct Professor, RCAST, the University of Tokyo |
| 2005: | Short-term Consultant, World Bank |
| 2006-2007: | Visiting Professor, Statistical Research and Training Institute |
| 2007-2010: | Faculty Fellow, Research Institute of Economy, Trade and Industry |
| 2009, 2010: | Short-term Consultant, OECD/EAS |