He turned professional in late 2006 and won the 2007 Maekyung Open in his second start on the Asian Tour.

In 2010, Kim won the Diamond Cup Golf, Japan Open and Mynavi ABC Championship on the Japan Golf Tour and became the first Korean golfer to lead the money list on the Tour.

He also played in the 2011 Presidents Cup, representing the International Team in a 15–19 defeat to USA.

He won a further three events during the 2016 season, including The Crowns, to take his number of Asian Tour victories to thirteen.

QF, R16, R32, R64 = Round in which player lost in match play "T" = tied Note that the HSBC Champions did not become a WGC event until 2009.