- 2023/04 - 現在 National Institute of Maritime, Port and Aviation Technology Distinguished Reseacher
- 2021/10 - 現在 Faculty of Engineering, Kyushu University Part-time Lecturer
- 2017/10 - 現在 Graduate School of Frontier Science, The University of Tokyo Part-time Lecturer
- 2017/07 - 現在 National Maritime Research Institute, National Institute of Maritime, Port and Aviation Technology Fluids Engineering & Hull Design Department Director
- 2014/04 - 現在 Graduate School of Engineering, Osaka University University-Industry Collaboration Board Professor
- 2018/04 - 2022/09 Graduate School of Maritime Sciences, Kobe University Part-time Lecturer
- 2017/04 - 2018/03 National Maritime Research Institute, National Institute of Maritime, Port and Aviation Technology Performance of Ships in Actual Seas Research Group, Fluids Engineering & Hull Design Department Head of Performance of Ships in Actual Seas Research Group
- 2017/04 - 2017/06 National Maritime Research Institute, National Institute of Maritime, Port and Aviation Technology Center for International Cooperation
- 2016/04 - 2017/03 National Maritime Research Institute Center for International Cooperation
- 2016/04 - 2017/03 National Maritime Research Institute Performance of Ships in Actual Seas Research Group, Fluids Engineering & Hull Design Department Head of Performance of Ships in Actual Seas Research Group
- 2014/04 - 2016/03 National Maritime Research Institute Performance of Ships in Actual Seas Research Group, Fluids Engineering & Hull Design Department Head of Performance of Ships in Actual Seas Research Group
- 2012/04 - 2016/03 National Maritime Research Institute Center for International Cooperation
- 2012/04 - 2014/03 Graduate School of Engineering, Osaka University Office for University-Industry Collaboration Associate Professor
- 2012/04 - 2014/03 National Maritime Research Institute Performance of Ships in Actual Seas Research Group, Fluids Engineering & Hull Design Department Principal Researcher
- 2012/01 - 2012/03 National Maritime Research Institute Advanced Research Center of Ship Performance in Actual Sea, Fluids Engineering & Hull Design Department Principal Researcher
- 2011/04 - 2011/12 National Maritime Research Institute Advanced Research Center of Ship Performance in Actual Sea, Fluids Engineering & Hull Design Department Senior Researcher
- 2009/08 - 2011/03 National Maritime Research Institute Center for Ship Performance Index (10 mode at Sea), Fluids Engineering & Ship Performance Evaluation Department Senior Researcher
- 2008/04 - 2009/08 National Maritime Research Institute Project for Ship Performance Index (10 mode at Sea) Senior Researcher
- 2005/04 - 2008/03 National Maritime Research Institute Project for Performance Evaluation in Actual Seas Senior Researcher
- 2006/10 - 2007/10 Technische Universität Berlin Institut für Land- und Seeverkhr, Bereich Schiffs- und Meerestechnik Gastwissenschaftler (Visiting scientist)
- 2003/04 - 2006/03 National Maritime Research Institute Seakeeping Group, Maritime Safety Department Senior Researcher
- 2002/04 - 2003/03 National Maritime Research Institute Planning Group, Revolutionary Coastal Ship (Super Eco-Ship) Project Team Researcher
- 2001/04 - 2002/03 National Maritime Research Institute Planning Group, Revolutionary Coastal Ship Project Team Researcher
- 2001/04 - 2002/03 National Maritime Research Institute Seaworthiness Section, Ship Dynamics Division Researcher
- 2001/01 - 2001/03 Ship Research Institute, Ministry of Land, Infrastructure and Transport Seaworthiness Section, Ship Dynamics Division Researcher
- 1999/05 - 2000/12 Ship Research Institute, Ministry of Transport Seaworthiness Section, Ship Dynamics Division Researcher
- 1998/04 - 1999/04 Ship Research Institute, Ministry of Transport Plan Coordination Desk, Research Planning Office
- 1998/04 - 1999/04 Ship Research Institute, Ministry of Transport Propulsion Section, Ship Propulsion Division Researcher