- 2016/04 - 2019/03 National Agriculture and Food Research Organization
- 2014/04 - 2016/03 農業生物資源研究所 遺伝資源センター センター長
- 2011/04 - 2014/03 National Agriculture and Food Research Organization
- 2009 - 2011 National Agriculture and Food Research Organization
- 2007 - 2009 National Agriculture and Food Research Organization
- 2006 - 2007 National Agriculture and Food Research Organization
- 2003 - 2006 National Agriculture and Food Research Organization
- 2001 - 2003 National Agriculture and Food Research Organization
- 2001 - 2003 Head of Lab. National Institute of Crop Science, NARO
- 2003 - - Head of Coordination Division, National Institute of Crop Science, NARO
- 1997 - 2001 Ministry of Agriculture, Forestry and Fisheries
- 1997 - 2001 Head of lowland rice breeding lab, Chugku agriculture Experimental Station
- 1992 - 1997 Ibaraki Agricultural Center, Plant-Biotechnology Institute
- 1992 - 1997 Head of upland rice breeding team, Ibaraki Agriculture Center
- 1989 - 1992 Ministry of Agriculture, Forestry and Fisheries
- 1989 - 1992 Researcher, Tropical Agriculture Research Center, Researcher
- 1981 - 1989 Ministry of Agriculture, Forestry and Fisheries
- 1981 - 1989 Researcher, National Agriculture Research Center