He began his acting career in 1989 in the theatrical production of Les Misérables. Steinmiller went on to star in films in the early 1990s, including Jack the Bear (for which he received a Young Artist Award nomination), Bingo, Rudy and The Ref.
Steinmiller kicked off his acting career in 1989 with a stage production of Les Misérables. He then went on to star in several films in the early 1990s, including Jack the Bear, for which he received a Young Artist Award nomination, as well as Bingo, Rudy, and The Ref.