- 2018/03 - 現在 Akita National College of Technology Institute of Natural Science Associate professor
- 2014/04 - 2018/02 Akita National College of Technology Institute of Natural Science Lecturer
- 2013/05 - 2014/03 Hokkaido University Department of Mathematics
- 2012/04 - 2014/03 Hokkaido University Part-time lecturer
- 2012/04 - 2013/03 Graduate School of Science, Hokkaido University Postdoctoral fellow
- 2011/04 - 2012/03 Graduate School of Science, Hokkaido University Postdoctoral researcher
- 2011/04 - 2012/01 ICMC-USP, Brazil Postdoctoral researcher (JSPS-ITP research fellow)
- 2008/04 - 2011/03 Graduate school of Science, Hokkaido University PhD
- 2006/04 - 2008/03 Hokkaido University Graduate School of Science, Department of Mathematics
- 2002/04 - 2006/03 Hokkaido University School of Science
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