Beginning Park began training to become an actor after she was discovered by
JYP Entertainment in 2015, after they saw her on the cover of a college magazine called . She made her acting debut in
Jo Kwon's music video "Crosswalk" in 2016.
Breakthrough roles In 2020, she landed her first main role in a television series in the
tvN drama ''
It's Okay to Not Be Okay, starring Kim Soo-hyun and Seo Yea-ji. The New York Times'' named the show one of "The Best International Shows of 2020" and it received a nomination for Best TV Movie or Miniseries at the
49th International Emmy Awards in the
Best TV Movie or Miniseries categories. That same year, Park was cast in the Netflix series
Sweet Home as Yoon Ji-su, a troubled bass guitarist who moves into Green Home after her boyfriend's suicide. A skilled survivor, her character wields a baseball bat and also plays the acoustic guitar. She reprised her role for seasons two and three. Later, Park admitted she did not have high expectations of being cast, but recalled, "as soon as [she] left the audition set, the director called [her] and said to leave with a script." Park and her fellow actresses were praised for breaking stereotypes of female characters. For her performance, she earned a nomination for
Best New Actress – Television in
57th Baeksang Arts Awards.
Transistioning to leading roles and Squid Games In 2021, Park starred as Yoon Soo-hyun, a police detective and childhood friend of Kim Ga-on (
Park Jin-young), in the mystery legal drama
The Devil Judge. Later that year, she took on her first leading role in a terrestrial drama,
Dali & Cocky Prince. She portrayed Kim Da-li, a visiting researcher at the Saint Müller Museum who eventually becomes the director of the Cheong-song Art Museum. Dali is knowledgeable in many areas, speaks seven languages fluently, and has a pleasant personality, but she struggles with household tasks, including cooking. It aired on
KBS2 from September 22 to November 11, 2021. In 2023, she starred in the
Netflix original series
Celebrity. She acted as Seo Ah-ri, a humble door-to-door make-up saleswoman who finds herself thrown into a life of fame, wealth, and desire as she explores the world of social media influencers. The same year she also starred in the series
A Good Day to Be a Dog alongside
Cha Eun-woo, based on a Naver webtoon of the same name by Lee Hye. Park acted as Han Hae-na/Mak-soon, a high school Korean language teacher who turns into a dog when she kisses someone for the first time. In 2024, it was announced that Park had been cast in the Netflix series
Squid Game season 2 and
season 3. Production for the second season began in July 2023 and it was released on December 26, 2024. The third and final season was filmed back-to-back with the second season and was released on June 27, 2025. She plays Kang No-eul, a North Korean
sniper whom director
Hwang Dong-hyuk described as having "no reason left to live." To prepare for the role, she worked hard on the emotional acting requested by director Hwang and trained to embody the physicality of a soldier. The role further expanded her international prominence. The July 2025 Luxury Issue of
Elle India featured Park as the first Korean actress to
appear on the print cover. Park stars as Shin Jae-yi, a former training partner and rival to Mantis, in the 2025 Netflix
action thriller film Mantis. Directed by Lee Tae-sung, the film is a spin-off of
Kill Boksoon and features Park alongside
Yim Si-wan and
Jo Woo-jin. The film was released on September 26, 2025 on Netflix. Park's upcoming project also includes the crime mystery series
Unfriend, which is slated to premiere as a
TVING original. Filmed in 2023, the series, co-starring
Kim Seon-ho, was held for a 2026 launch. Co-directed by
Kim Jee-woon and
Park Bo-ram, the project is a joint production by Yong Film, Anthology Studio, and SK Global Entertainment, adapting
Chan Ho-kei's crime novel
Second Sister. ==Endorsements==