Lieutenant Christine Castillo began her career with the Sheriff’s Office as a Correctional Officer on March 10, 2003. On January 8, 2005 Christine was promoted to Deputy Sheriff and again to Sergeant-Sheriff on March 24, 2019. As a Deputy-Sheriff, she was assigned to Court Security, Patrol, PIO, and Civil. During these assignments Christine worked other collateral duties including Field Training Officer, Mobile Field Force Operator, and Crisis Negotiator. As a Sergeant-Sheriff, she was assigned to Patrol, Court Services, and the Office of Emergency Services (OES). While in OES, Christine served as the county-wide Law Enforcement Mutual Aid Coordinator, Search and Rescue Coordinator, and the Crisis Negotiations Team Leader.

Christine was promoted to Lieutenant-Sheriff on October 15, 2023 and is currently assigned to the Court Services and Transportation Bureaus.

Christine is a graduate of the CA POST Sherman Block Supervisory Leadership Institute (SLI) Class 506.