長崎大学
Tsuda held several faculty positions in his academic career. He was associate professor in the Faculty of Economics at Nagasaki University from 1986 to 1988. He then moved to Nagoya University where he was associate professor in the Institute of Languages and Cultures from 1988 to 1993 and Professor in the Department of International Communication and in the Graduate School of International Development from 1993 to 2001.