Jeffrey is a graduate of the Dramatic Writing Program at Tisch School of the Arts, New York University. For over twenty-seven years he has written for film and television, and has currently written over fifty hours of animated television. He is known for Galactik Football and Oban Star Racers. His recent work includes Viking Skool, Jade Armor and Angelo Rules. Jeffrey was originally an Off-Broadway actor with the prestigious Circle Repertory Company in New York City.

Jeffrey teaches in the following programmes