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• Professor at Hokkaido University: Apr. 2020 – present.
• Associate Professor at Hokkaido University: Apr. 2013 – Mar. 2020.
• Associate Professor at Ritsumeikan University: Apr. 2009 – Mar. 2013.
• Research Assistant at University of Washington: Sept. 2007 – Feb. 2009.
• Lecturer at University of Washington: Summer 2005, 2006, 2007, and Winter 2007.