Lim made his first professional television debut on Magic, aired on SBS in 2004, and made his film debut in A Millionaire’s First Love in 2006, followed by a series of supporting roles, notably in The Snow Queen (2006) and Boys Over Flowers (2009). He received favorable reviews for his performance as a blind painter in episode 10 of Auction House, a 2007 TV series revolving around the art world which aired on MBC. But his breakthrough came in his first leading role in the 2009 MBC series Tamra, the Island.