[1][2][3] Carrillo was born in La Mirada, California and attended St. John Bosco High School.
[4] He began playing college soccer at California State University, Dominguez Hills, where he posted a 13-3-1 record in two seasons with the Toros after redshirting as a freshman.
At St. John's he played two years, as a backup on the Red Storm's College Cup squad in 2008 and starting all 21 games during the 2009 season, going 9–3–9.
[6] Carrillo attended Major League Soccer's (MLS) 2010 Arizona training camp with Seattle Sounders FC.
[9] Eric Wynalda chose Carrillo to be part of the Cal Football Club in 2012, where they competed in the 2012 Lamar Hunt U.S. Open Cup and pulled off an upset by beating MLS' Portland Timbers.