In November 2010, Jung passed the auditions to become the main singer of Apink. She had not received any professional training prior to joining Apink, and trained for only two months with the group before debuting.[5]
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".[6] Jung joined the rest of the group to film Apink News prior to their debut.[7] On April 21, 2011, Jung made her debut as a main vocalist of Apink on Mnet's M Countdown with two songs, "Mollayo" and "Wishlist", from the group's debut extended play Seven Springs of Apink.
Jung has collaborated with various artists for OSTs and promotional songs. For the project A Cube for Season #Green, Jung Eun-ji and fellow Cube artist Yang Yo-seob, sang the duet track "Love Day".[8]
Jung made her acting debut in Reply 1997, a 1990s nostalgic dramedy which became one of the highest-rated Korean series on cable television.[9] She played the female protagonist, a hardcore H.O.T. fan who becomes a TV drama writer.[10] 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.[10] The role won her several awards, including the 49th Baeksang Arts Award for Best New TV Actress.
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.[11][12] "All For You" became one of the best-selling singles of the year on the Gaon Single Chart.[13][14]
In October 2012, Jung was then cast in a supporting role in the 2013 melodrama That Winter, the Wind Blows.[15] For her role, she won Best Performance at the 2nd APAN Star Awards and New Star Award at the 2013 SBS Drama Awards. Jung performed in a Korean staging of the Hollywood film-turned-musical Legally Blonde, playing the lead role of Elle Woods.[16] The show ran from November 16, 2012, to March 17, 2013.[17]
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.[18][19][20] She released her first solo single titled "Its You" for the soundtrack of Three Days.[21]
In 2014, she starred in another musical, the stage adaptation of 2004 series Full House.[22] Afterwards, Jung starred in the romantic comedy series Lovers of Music, which depicts a female singer's struggles to become successful in the old-fashioned musical genre trot.[23][24]
In 2015, Jung starred as the female lead in KBS2 high school drama Cheer Up! playing the role of a high school student who ranks at the bottom of her class.[25][26]
On April 18, 2016, Jung debuted as a solo artist with the EP Dream, which consisted of six songs.[20] The title track "Hopefully Sky" is written by Jung, which recounts the times she spent with her father.[27] "Hopefully Sky" topped eight local music charts,[28] and the album sold 30,000 copies upon release.[29] In April 2017, Jung released her second EP The Space.[30] The title track "The Spring" and its accompanying music video was unveiled on April 10, and debuted within the top ten spots on local music charts.[31] From June 3 to 5, Jung held her first solo concert titled "Attic" at Ewha Womans University's Samsung Hall.[32][33]
In 2017, Jung was cast in JTBC's action melodrama Untouchable which began airing on November 24.[34] In 2018, Jung was cast in the horror film 0.0MHz, based on the webtoon of the same name.[35]
On October 18, 2018, Jung released a music video for the single "Being There", from her third EP Hyehwa.[36]
On July 15, 2020, Jung released her fourth EP Simple, along with the title track "Away".[38]
In 2021, Jung was cast in TVING's web series Work Later, Drink Now as Kang Ji-goo, an origami YouTuber.[39] The series premiered at the Cannes International Series Festival 2022 from April 1 to April 6, 2022.[40]
On October 30, 2022, IST Entertainment announced that the release of the remake album Log, which was originally scheduled to be released on November 2, has been postponed to November 11 due to the aftermath of the Seoul Halloween crowd crush.[41] On November 17, 2022, IST Entertainment announced that Jung would be holding "Travelog" solo concerts on December 10 and 11.[42]
In 2022, she starred in the mystery thriller television series Blind, portraying the role of a social worker.[43]
On April 28, 2023, IST Entertainment announced that Jung renewed her contract with the company.[44]
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^Park, Pan-seok (July 7, 2021). "'술꾼도시여자들' 이선빈X한선화X정은지X최시원 출연 확정 [공식]" [Lee Sun-bin X Han Seon-hwa X Jung Eun-ji X Choi Si-won confirmed to appear in 'Women in the City of Drinking' [Official]] (in Korean). Osen. Archived from the original on September 14, 2021. Retrieved September 14, 2021 – via Naver.
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^Jeong, Hye-yoon (March 8, 2022). "정은지, '블라인드' 캐스팅 확정..사회복지사 조은기役[공식]" [Jung Eun-ji, casting confirmed for 'Blind'..Social worker Jo Eun-ki [Official]] (in Korean). Herald POP. Archived from the original on March 9, 2022. Retrieved March 9, 2022 – via Naver.
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^"2013 Top 100 Gaon Download Chart". Gaon Music Chart (in Korean). Korea Music Content Industry Association. Archived from the original on June 30, 2015. Retrieved June 5, 2015.
^"2016년07월 Download Chart". Gaon Chart (in Korean). Korea Music Content Industry Association. December 21, 2016. Archived from the original on November 24, 2016. Retrieved December 21, 2016.
"2016년08월 Download Chart". Gaon Chart (in Korean). Korea Music Content Industry Association. December 21, 2016. Archived from the original on December 25, 2020. Retrieved December 21, 2016.
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^"2016년21주차 Download Chart". Gaon Music Chart (in Korean). Korea Music Content Industry Association. Archived from the original on June 16, 2016. Retrieved June 25, 2016.
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^Kim Soo-jin (December 15, 2021). "'술꾼도시여자들' 시즌2확정 [공식]" ['Drunk City Women' Season 2 Confirmed [Official]] (in Korean). Star News. Archived from the original on January 24, 2022. Retrieved December 15, 2021 – via Naver.
^Shim Eom-kyung (December 22, 2021). "tvN 측 "이선빈·정은지·한선화, 새 예능 '산꾼도시여자들' 출연"[공식]" [tvN side "Lee Seon-bin, Jung Eun-ji, Han Seon-hwa to appear in the new entertainment 'Women in Mountain Mountaineering City'" [Official]] (in Korean). SPOTV News. Archived from the original on September 28, 2022. Retrieved December 22, 2021 – via Naver.
^Kim Ye-eun (August 8, 2022). "유빈·신지민·미미·문수아...'두 번째 세계' 래퍼8人 공개" [Yubin, Shin Ji-min, Mimi, Moon Soo-ah... 8 rappers from 'Second World' revealed] (in Korean). X-ports News. Archived from the original on September 30, 2022. Retrieved August 8, 2022 – via Naver.
^Kim, Na-yul (March 4, 2024). '걸스 온 파이어' 정은지→영케이, 6人 프로듀서 출연 확정[공식] ['Girls on Fire' Jung Eun-ji → Young K, 6 producers confirmed to appear [Official]] (in Korean). Herald Pop. Archived from the original on July 14, 2024. Retrieved July 14, 2024 – via Naver.
^Jang Woo-young (February 16, 2022). "정은지, 2년8개월 만 '가요광장' 하차...27일 막방 [공식]" [Jung Eun-ji leaves 'Gayo Plaza' after 2 years and 8 months... Last broadcast on the 27th [Official]] (in Korean). Osen. Archived from the original on September 28, 2022. Retrieved February 16, 2022 – via Naver.
^Song, Eun-seok (January 23, 2014). 서경석-정은지-은혁 '오늘의 사회는 우리가!' [Seo Kyung-seok - Jung Eun-ji - Eunhyuk 'We are the MC of today!'] (in Korean). No Cut News. Archived from the original on July 14, 2024. Retrieved July 14, 2024 – via Naver.
^Jang Da-hee (September 21, 2022). "서울드라마어워즈2022, 3년만 오프라인 진행...김선호-지수 연기상 수상" [Seoul Drama Awards 2022, offline for the first time in 3 years... Kim Seon-ho - Jisoo Award for Acting Award] (in Korean). Sports TV News. Archived from the original on September 22, 2022. Retrieved September 21, 2022 – via Naver.
^Jeon Hyo-jin (July 21, 2020). "에이핑크 정은지, 26일 언택트 라이브 공연 개최". Sports Donga (in Korean). Archived from the original on June 30, 2021. Retrieved June 30, 2021.
^Jo Yoo-kyung (December 31, 2014). "[KBS 연기대상] 이다희·정은지, 여자 인기상 수상". Sports Donga (in Korean). Archived from the original on June 30, 2021. Retrieved June 30, 2021.
^Kang Mi-hwa (December 17, 2019). "[영상M] 오마이걸, 2020년 기대되는 '여자아이돌'". Maeil Daily (in Korean). Archived from the original on December 17, 2019. Retrieved May 6, 2021.
^Yoon Seong-yeol (October 28, 2016). "'2016MAMA' 후보 발표..엑소·방탄·트와이스까지". MT Star News (in Korean). Archived from the original on November 27, 2019. Retrieved June 30, 2021.