[4] Shim made her debut as a director at the age of 18 in the film Nobody's Subconscious and Realm, released in 2016.

[5] Shim Dal-gi made her acting debut in 2018 in the TV series Feel Good to Die,[6] and short film Dong-a for which she was awarded the Jury's Special Award for the Actor at Mise-en-scène Short Film Festival.

[8] She got recognition after appearing in TV series Hospital Playlist and Netflix original The School Nurse Files (2020), and films Dust-Man and Snowball (2021).

[10] In 2022, she is gaining popularity for her role as the young version of Jeong Eun-hee (Lee Jung-eun) in tvN series Our Blues.

Her portrayal of a shy high school girl and "her various expressions and emotional performances that change depending on the situation" were appreciated.