Joy has had various nicknames including: Doongdoongie, Malgeumie, Cute Joy, Miss Korea, and Sexy Dynamite.
After receiving praise for performing a cover of the Korean rock band Cherry Filter’s song "Flying Duck", Joy was influenced to become a singer.
Joy auditioned for SM Entertainment through the SM Global Audition in Seoul in 2012.
She wasn’t part of the SM Rookie’s pre-debut team.
In 2015 she joined the show "We Got Married" with BTOB's Yook Sungjae, and went on to win the New Star Award and Best Couple at the MBC Entertainment Awards.
In 2017 Joy debuted as an actress in the lead role of her first drama The Liar and His Lover, and won the Newcomer Award at the OSEN Cable TV Awards. In 2018 she acted in her second lead role in the drama Tempted, and was nominated for Best Actress and Rookie of the Year at the MBC Drama Awards.
In July 2017, Joy appeared on King of Mask Singer where she won her first round of the singing competition program and performed under the alias of Bandabi.
Joy has been ranked as the top girl group member in terms of brand value in March 2018, May 2018, January 2020, and February 2020.
In 2018 Joy endorsed Fitz Beer, and from 2019 Joy is currently the muse of pro Korean makeup brand eSpoir.
Joy has hosted various television programs, most notably Sugarman 2 in 2018 with Yoo Jae-suk, You Hee-yeol, and Park Na-rae, Pajama Friends with Song Ji-hyo and Jang Yoon-ju, and Get It Beauty.
In 2019 Joy became the main host alongside Jang Yoon-ju of Asia's most popular beauty program Get It Beauty.
Joy was confirmed by K-pop Radar to be the K-pop artist with the most Instagram followers who opened an account in 2019.
In 2020, Joy became a main cast member of the show Handsome Tigers, alongside Cha Eunwoo, Yoo Seonho, Lee Sangyoon, and Seo Janghoon.
In 2020, Joy was named the new official model and face of Aveda, and continued to be the muse of eSpoir Makeup.
In February 2020, Joy was invited as a VIP guest of Michael Kors to attend New York Fashion Week, with Vogue Magazine calling Joy "one of K-pop’s brightest stars" and stating that she "could moonlight as a model".
In February 2020, Joy was nominated for Best Female Variety Idol by the Brand Customer Loyalty Awards.
In 2020, Joy donated 10 million won for the Community Chest of Korea to help support those affected by the 2019–20 coronavirus pandemic.