Mr. Nishiyama joined Japanese National Railways (JNR) in 1981 and was assigned to East Japan Railway Company (JR East) when JNR was divided and privatized in 1987.
In JR East he held various management positions mainly in the transport and rolling stock field such as Chief of an electric railcar depot, Manager of Car & Crew Utilization Division of regional office and General Manager of Transport Department of regional office. From 2007 to 2008 he was responsible for overall customer service in the company as General Manager of Customer Service Department in the Headquarters. After four years’ experience in United States as Executive Director of New York Office since 2008, he served as Director of International Department in the Headquarters from 2012 to 2014.
In June 2014, he joined the Board of the company and has been leading overseas related affairs as Executive Director.