- 2013/10 - 2016/03 Tokyo Institute of Technology Earth-Life Science Institute administrator
- 2011/04 - 2016/03 The Open University of Japan Visiting Professor
- 2012/06 - 2015/03 Japan Science and Technology Agency Center for Science Communication Fellow
- 2011/04 - 2015/03 Keio University Center for Research and Education of Natural Sciences Visiting Professor
- 2006/10 - 2011/03 The Open University of Japan Faculty of Liberal Arts Proffessor
- 2000 - 2006 Keio University Faculty of Science and Technology
- 2000 - 2006 Faculty of Science and Technology, Keio University
- 1998 - 2000 東京工業大学 ,学長特別補佐兼広報室長
- 1998 - 2000 Chief Presidential Aide, Tokyo Institute of Technology
- 1987 - 2000 東京工業大学理学部・生命理工学部(生命理学科 分子発生学講座担当) ,教授
- 1996 - 1998 Tokyo Institute of Technology School of Bioscience and Biotechnology
- 1996 - 1998 Dean, Faculty of Bioscience and Biotechnology, Tokyo Institue of Technology
- 1988 - 1998 Stazione Zoologica 'Anton Dohrn' (イタリア国立ナポリ臨海研究所),客員研究員
- 1988 - 1998 Visiting Scientist, Stazione Zoologica 'Anton Dohrn'
- 1995 - 1996 大学院生命理工学研究科 学科長
- 1995 - 1996 Chairman, Department of Life Science, Graduate School of Bioscience and Biotechnology, Tokyo Institue of Technology
- 1989 - 1993 東京工業大学遺伝子実験施設 ,施設長
- 1989 - 1993 Director, Gene Research Center, Tokyo Institute of Technology
- 1992 - 1992 カリフォルニア大学バークレイ校分子・細胞生物学部Miller客員教授
- 1992 - 1992 Miller Visiting Professor, University of California, Berkeley
- 1991 - 1991 フィリッピン大学デイリマン校(分子生物学) ,客員教授
- 1991 - 1991 Visiting Professor, Molecular Biology Program and Institue of Biology, University of the Philippines
- 1985 - 1987 Tokyo Institute of Technology School of Science
- 1985 - 1987 Professor, Laboratory of Biology,Faculty of Science, Tokyo Institute of Technology
- 1981 - 1984 Nagoya University School of Science
- 1981 - 1984 Associate Professor, Department of Biology, Faculty of Science, Nagoya University
- 1982 - 1982 Stazione Zoologica 'Anton Dohrn' (イタリア国立ナポリ臨海研究所) ,客員研究員
- 1982 - 1982 Visiting Scientist, Stazione Zoologica 'Anton Dohrn'
- 1973 - 1981 Hokkaido University Institute of Low Temperature Science
- 1973 - 1981 Associate Professor, Department of Biochemistry, Institute of Low Temperature Science, Hokkaido University
- 1979 - 1979 Stazione Zoologica 'Anton Dohrn' (イタリア国立ナポリ臨海研究所) ,客員研究員
- 1979 - 1979 Visiting Scientist, Stazione Zoologica 'Anton Dohrn'
- 1965 - 1973 The University of Tokyo College of Arts and Sciences
- 1965 - 1973 Instructor, Department of Biology, University of Tokyo
- 1970 - 1972 Massachusetts General Hospital (Department of Neurology),Postdoctoral Fellow
- 1970 - 1972 Postdoctoral Fellow, Department of Neurology, Massachusetts General Hospital