Gill attended Mater Dei High School in Santa Ana, California.

While at Dominguez Hills, Gill was named an honorable mention All-California Collegiate Athletic Association.

Gill then spent two season as an assistant coach for the Nevada Wolf Pack baseball team.

[8][9] In 2011, Gill was interviewed for the head coaching position at Cal State Fullerton,[10] but remained with the Lions.

On June 14, 2019, Gill was hired to be the new head coach of the USC Trojans baseball program.