In 2012, Lee won the Best Actor citation from the Toronto Theatre Critics' Awards for his portrayal of Kim Sang-il in "Kim's Convenience". He played the role of Appa on stage in several Toronto productions of "Kim's Convenience" and on a national tour with the Soulpepper theatre company, as well as at an Off Broadway staging of the play. He brought the role of Appa to television in 2016 when the show was adapted as a television series. In 2016, Lee played Zhang Lin in the Royal Manitoba Theatre Centre/Canadian Stage production of "Chimerica". On January 11, 2017, he guest starred on an episode of "This Hour Has 22 Minutes".