Debut At the age of 19 years old on February 28, 2012, Kim made his professional boxing debut against Pil Joon Kim, winning the fight via 4 round split decision.
Undisputed Super bantamweight title fight January 10, 2025, it was reported that on January 24, 2025, Kim will fight for the undisputed super bantamweight title against champion
Naoya Inoue as replacement for injured
Sam Goodman. Kim lost the fight by 4th round knockout. This was the first and only knockout loss of Kim's career ==Professional boxing record==