Nishi taught at
Kyushu University (assistant professor; April 1969 - March 1972),
Kagoshima University (associate professor; April 1975 - March 1980, professor; April 1980 - September 1981),
Ehime University (professor; October 1981 - March 1988), and
Kobe City University of Foreign Studies (professor; April 1988 - March 1998). In 1996 when Kobe City University of Foreign Studies newly founded the linguistics doctoral course at its graduate school, he was the only
D-maru-gō professor of linguistics qualified to supervise doctoral students. He is now a professor emeritus at Kobe City University of Foreign Studies, and was nominated in 1993 as a distinguished professor at
Central University of Nationalities in Beijing. ==Publications==