Paul is the vice president of GIFFORDS Center for Violence Intervention. He was raised in Southeast Los Angeles in an environment with gangs, drugs, and gun violence. In 2001, he began his career as a volunteer for a hospital-based violence intervention program, and in 2005 he co-founded Southern California Crossroads, a nonprofit organization that provides violence prevention and intervention services throughout the greater Los Angeles region.

In 2012, Paul co-founded the national Gang Violence Prevention and Intervention Conference, which brought over 800 practitioners in the field of community violence together to share best practice approaches to violence. In addition, Paul has also worked as a consultant on community violence in a number of places around the world, including Guatemala, London, the Dominican Republic, Ireland, Tunisia, St. Kitts and Nevis, and El Salvador.