After finishing school at the University of Cincinnati, Ronnell joined the prestigious luxury hotel chain, The Four Seasons Hotel and Resorts, as their Director of Operations. He moved to California in the mid-90s, and in 2013, with a lifelong love of films, Ronnell co-produced a short film starring Stacey Dash and Coier Amerson entitled Blue Butterflies. And in 2016, Ronnell produced an off-Broadway play Unspeakable, a dramatic fantasia based on the life of comedian Richard Pryor.

He soon broke into movies, and in 2017, he was an Executive Producer on the widely anticipated movie Churchill, starring Brian Cox and Miranda Richardson. Ronnell also co-produced the feature film, Walkaway Joe in 2020, starring Academy Award Nominee, David Strathairn. He is also known for Good Night and Good Luck with Jeffrey Dean Morgan, as well as Walking Dead. Ronnell’s second feature with Milillo, Oscar’s Options, is moving toward a summer 2023 start. Ronnell is currently working on a film degree that he will finish in 2024. He resides in Carlsbad, CA with his 16-year-old son Tysen.