Patrick Leung was born and raised in San Francisco. He attended San Francisco State University and earned a B.S. in Business Administration. He began working for the City & County of San Francisco in 2004 and has worked at the San Francisco Police Department, the Human Services Agency, and the Department of Emergency Management. As the SFPD Chief Financial Officer, he oversees the Fiscal Division that is responsible for budgeting, accounting, purchasing, supplies, and grant administration.