In live action and/or on WGA shows, the title of “Story Editor” is a low-level position just above Staff Writer and is considered a writer early in their career with no supervisory role.
In most animation rooms, “Story Editor” refers to the Head Writer (or the #2 if the Showrunner is also a writer). Duties of this position usually include managing/running the writers’ room, delegating work among the writers, giving notes on each draft, rewriting the work of other writers, and managerial duties.
“Story Editor” is an upper-level position in animation.
We recommend negotiating “Head Writer” as your on-screen credit if you do not have a Producer title.