[4] In January 2015, MBK Entertainment announced its plans to debut a new girl group, originally with a strategy to have candidates compete on a reality survival program.

[5] DIA released their debut album, Do It Amazing, on September 14, 2015, with the lead single "Somehow" (Korean: 왠지; RR: Waenji).

In December 2015, MBK Entertainment announced that Jung temporarily withdrew from the group to join the trainee survival program Produce 101, which she had auditioned for and signed contracts with before DIA officially debuted.

[9][10] A week after their debut extended play Chrysalis was released, MBK Entertainment confirmed that Jung will return to DIA for their upcoming comeback in June 2016.

[18] In December 2016, Jung was cast in the science fiction web drama 109 Strange Things, co-starring with Choi Tae-joon.

[20] In 2017, Jung featured in SBS's romantic fantasy drama Reunited Worlds, playing the younger version of Lee Yeon-hee's character.

[22] In December, it was announced that Jung has joined the cast of SBS' reality survival show Law of the Jungle in Patagonia for their Chile special.

[23][24] In 2018, Jung starred in KBS' weekend drama Marry Me Now, playing the younger version of Jang Mi-hee's character.