Riley graduated from Tisch School of the Arts, where he studied film and theater. After a brief study in Prague, he returned to his hometown of Pittsburgh, where he worked for the Pittsburgh Public Theater.
Riley later moved to Los Angeles, California, where he began working for Disney, starting with The Lion King's Timon & Pumbaa. After pitching the company three story ideas for the series, he has been writing for animation ever since.
Riley is perhaps best known for creating the Disney Junior television show Special Agent Oso, which got nominated for an Emmy Award. He also produced Disney's The Lion Guard: Return of the Roar and produces its accompanying television show, The Lion Guard.
He has a son who was diagnosed with autism in 2005.
- The Lion Guard (writer-7 episodes, executive producer-9 episodes, composer-8 episodes, story editor-4 episodes)
- Special Agent Oso (writer-16 episodes, story editor-23 episodes, executive producer-24 episodes, composer-21 episodes)
- Teamo Supremo (writer-9 episodes, executive story editor-3 episodes)
- Teacher’s Pet (writer-4 episodes, story editor-1 episode)
- Recess (writer-7 episodes, story editor-2 episodes)
- Timon & Pumbaa (writer-3 episodes, production secretary-35 episodes)
- The Lion Guard: Return of the Roar (writer, executive producer and voice actor: Big Baboon)
- Doc McStuffins (writer-1 episode)
- Recess: School's Out (punch-up writer)
- Jungle Cubs (production secretary-8 episodes)
- Alternate Name is Stephen Ford Riley
- He is Dan Riley's brother
- He was nominated for a Daytime Emmy