· Professor, School of Transportation, Southeast University (Current)2023–
· Member, The Engineering Academy of Japan (Current)2021–
· Professor, Graduate School of Advanced Science and Engineering, Hiroshima University2020–2023
· Professor, Hiroshima University2011–2023
· Associate Professor, Hiroshima University2002–2011
· Associate Professor, IDEC, Hiroshima University2002–2010
· Urban And Transport Consultant, A Consultant Company2001–2002
· Research Fellow, Eindhoven University of Technology2000–2001
· Urban And Transport Consultant, A Consultant Company1998–2000
· Research Associate, Hiroshima University1996–1998
· Doctor of Engineering, Transportation & Environmental Engineering (MEXT Scholarship, Japan), Hiroshima University1993–1996