At the 2010 Winter Olympics in Vancouver, he finished 19th in the four-man event.

Kim finished 30th in the two-man event at the FIBT World Championships 2009 in Lake Placid, New York.

His best World Cup finish was 26th in the two-man event at Whistler, British Columbia in 2009.

At the 2018 Winter Olympics in Pyeongchang, the South Korean four-man team of Seo Young-woo, Won Yun-jong, Jun Jung-lin, and Kim Dong-hyun won a surprising silver medal in the four-man event, tying with a German team led by Nico Walther.

This biographical article relating to bobsleigh in South Korea is a stub.