[1] Kerner was born and raised in Lake Worth Beach, Florida,[2] and attended Suncoast Community High School, where he graduated in 2002.

Afterwards, he moved to Gainesville, where he attended the University of Florida, was a member of Beta Theta Pi (Pledge Class - Fall 2003), graduating with a degree in political science and criminology in 2006.

Upon becoming a member of the Florida Bar, he was selected to serve as a Special Prosecutor for the Palm Beach County State's Attorney.

He then began work as a civil litigation attorney for Schuler, Halvorson, Weisser, Zoeller & Overbeck, P.A., where he practices wrongful death, personal injury, and class action law for plaintiffs.

He has served as lead counsel in several state-wide class action cases challenging the constitutionality of red light camera ordinances.

He has appeared before the Florida Supreme Court in the landmark state preemption red light camera case of Masone v. City of Aventura, 147 So.3d 492 (Fla. 2014), and won.

While the 87th District is 52% Hispanic, it is also where Kerner was born and raised, and had resided except for his time in college, on the police force, and while in law school.

[citation needed] In the 2022 Florida gubernatorial election, Kerner endorsed the Republican incumbent Ron DeSantis over his Democratic challenger, former governor Charlie Crist.

He also authored legislation with State Senator Joseph Abruzzo that would "sever the parental rights of a rapist if a child is conceived as a result of the attack.