[citation needed] On March 31, 2012, Kim had her first leading role as Na Yoo-mi in the JTBC's drama Monster.

In December 2013, she was confirmed for tvN's new reality program, The Genius: Rule Breaker, with 12 other representative figures from different fields of work such as TV personalities, politicians, gamblers, and more.

[14] She also starred in Noble, My Love as Cha Yoon-seo, a veterinarian who runs her own animal hospital, across from Sung Hoon.

[15] In December 2016, Kim signed with new management agency Namoo Actors to start afresh as an actress.

[17] Later that year she appeared as part of the main cast in Bad Papa as Cha Ji-woo, the youngest female lieutenant.

[18] In 2019, Kim appeared as Veronica Park, the CEO of a film production company and an heiress with an audacious personality, in The Secret Life of My Secretary.

[21] On December 16, 2024, Namoo Actors confirmed reports that Kim had married her non-celebrity boyfriend the past summer.