2003-2008: Department of Surgery II, Hokkaido University Hospital, Sapporo, Japan.

2008-2010: Department of Cancer Vaccine, Mie University Graduate School of Medicine, Tsu, Japan

2010-2012: Ludwig Institute for Cancer Research Ltd., Memorial Sloan-Kettering Cancer Center, New York, NY.

2012-2017: Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO.

2017-2019: Department of Medical Oncology, Shinshu University Hospital, Matsumoto, Japan

2019-present: Department of Medical Oncology, Hokkaido University Graduate School of Medicine, Sapporo, Japan