He received his Bachelor of Science degree from California Polytechnic State University, Pomona and is a member of the fraternity Sigma Phi Epsilon.
He has his Master of Arts degree in management from the National University and was a past Senior Fellow of Public Policy at UCLA.
He was a deputy sheriff for Los Angeles County and a police officer in Tustin prior to his election to the assembly.
He received a Reserve Commission in the United States Army while attending the University of Texas at Arlington and was branched Armor.
Maddox became Senior Advisor on Legislation and Tax Policy for State Board of Equalization Member Michelle Steel in 2007.