Since debuting in 2012, he has worked across a wide range of media, moving fluidly between stage and screen. As a member of the New World Theatre Company, he has demonstrated a powerful stage presence in productions such as The Blue Nation, Brave New World, and Tank;0–24. He has also appeared in the drama Pachinko and the film Colony.
Since 2023, Juyoung Kwon and Sein Park have co-founded and run the play-specialized bookstore Inscript, where they share with readers the process through which texts come to life on stage. Expanding his role beyond that of an actor, he continues to engage audiences and readers as a cultural producer, opening up new ways of encountering and interpreting the diverse worlds of playwriting.