David was born at Fairfield Hospital and raised in Fairfield City. He went to Patrician Brothers College Fairfield and loved playing rugby league and cricket. 
 
Prior to politics, David was a Federal Agent in the Australian Federal Police fighting organised crime, corruption, and terrorism. He also served as a Captain in the Australian Army Reserve. David’s private sector experience includes working as a Management Consultant for KPMG Australia. 
 
Voluntarily, David formed the Youth Pathways Network, a volunteer group mentoring Western Sydney kids to succeed after high school and stay away from crime. David was also a voluntary Non-Executive Director at Community First Step, a not-for-profit organisation in Fairfield delivering youth, disability, and community services. 
 
Academically, David taught economics and law at Western Sydney University. He holds a PhD as well as degrees in law and economics (with double first-class honours and a university medal).