- 2022/04 - 現在 Tokai University School of Marine Science and Technology Professor
- 2019/04 - 2022/03 Tokai University
- 2017/04 - 2019/03 Tokai University School of Marine Science and Technology
- 2018/04 - 2018/07 Nippon Institute of Technology
- 2017/09 - 2018/03 Meiji Gakuin University Faculty of Law
- 2017/04 - 2018/03 Komazawa University Faculty of Economics, Department of Commerce
- 2017/04 - 2017/07 Nippon Institute of Technology
- 2016/09 - 2017/03 Meiji Gakuin University Faculty of Law
- 2015/04 - 2017/03 Nippon Yusen Kabushiki-Kaisha Ltd. Government and Industrial Affairs Group Manager
- 2016/04 - 2016/07 Nippon Institute of Technology
- 2015/09 - 2016/03 Meiji Gakuin University Faculty of Law
- 2015/04 - 2016/03 Komazawa University Faculty of Economics, Department of Commerce
- 2015/04 - 2015/07 Nippon Institute of Technology
- 2011/04 - 2015/03 Nippon Yusen Kaisha Ltd.Research Group Manager
- 2014/04 - 2014/07 Nippon Institute of Technology
- 2013/04 - 2014/03 Komazawa University Faculty of Economics, Department of Commerce
- 2013/04 - 2013/07 Nippon Institute of Technology
- 2012/04 - 2012/07 Nippon Institute of Technology
- 2011/04 - 2011/07 日本工業大学大学院技術経営研究科 非常勤講師(客員教授)
- 2007/04 - 2010/03 Hitotsubashi University Faculty of Commerce and Management
- 2005 - 2009 Monohakobi Technology Institute
- 2004/09 - 2005/09 Tokai University School of Marine Science and Technology, Department of Navigation Course of Logistics
- 1999 - 2005 日本郵船(株)調査グループ 調査役
- 1999 - - Nippon Yusen Kaisha Ltd. Research Division, Economist
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