scriptwriter

US /ˈskrɪptˌraɪ.t̬ɚ/
UK /ˈskrɪptˌraɪ.t̬ɚ/
"scriptwriter" picture
1.

a person who writes scripts for films, television, radio, or the stage

:
The scriptwriter worked tirelessly to perfect the dialogue.
She dreams of becoming a successful Hollywood scriptwriter.