[2] Jung made her acting debut in the critically acclaimed hit coming-of-age television series Reply 1997 in 2012.

[8] In July 2004, Jung participated in the KBS Busan Nursery Rhyme Contest Fun Day and won the grand prize.

[10] In March 2011, Jung was revealed to be the fourth member of Apink via an online video of her covering Jennifer Hudson's "Love You I Do".

[13] Jung made her acting debut in Reply 1997, a 1990s nostalgic dramedy which became one of the highest-rated Korean series on cable television.

[15] Jung was complimented by critics and audiences for her comedic and emotional acting, which was impressive for a newcomer, as well as for her authentic Busan dialect.

In August 2012, Jung recorded two promotional singles, "All For You" and "Our Love Like This" with Reply 1997 co-star Seo In-guk for the drama's soundtrack.

[18][19] In September 2012, Jung has been cast in the Korean staging of the Hollywood film-turned-musical Legally Blonde, playing the lead role of Elle Woods.

In 2013 and 2014, Jung collaborated with label-mate Huh Gak for duets titled "Short Hair" and "Break Up To Make Up" respectively, which were well-received by listeners and ranked atop major online music charts in Korea.

[36] From June 3 to 5, Jung held her first solo concert titled "Attic" at Ewha Womans University's Samsung Hall.

[43] In 2021, Jung was cast in TVING's web series Work Later, Drink Now as Kang Ji-goo, an origami YouTuber.

[45] In September 2022, she starred in the mystery thriller television series Blind, portraying the role of a social worker.

[49] On July 31, 2023, Jung was confirmed to portray the role of Lee Mijin in the JTBC series Miss Night and Day.