Deputy Warden Joseph O'Malley

Deputy Warden Joseph O’Malley joined the Suffolk County Sheriff's Office in 1992. In 1997, he was accepted into the newly formed Sheriff's Emergency Response Team (S.E.R.T.), which later became the Emergency Service Unit (ESU). He was promoted to Sergeant in 2000, managing line officers and inmate housing in Riverhead. O’Malley also worked in Support Services, overseeing vocational programs, the Record Room, court operations, parole transfers, bail processing, and classification rewrites. In 2001, he became the SERT Tactical Commander, responsible for planning and executing emergency response actions. He was assigned as Executive Officer of the Intelligence Unit in 2003 and then promoted to Investigator Sergeant in 2005, where he supervised investigators and ensured the safety of inmates and staff in both facilities.
O’Malley was promoted to Lieutenant in 2011 and assigned as Duty Lieutenant at both the Riverhead and Yaphank facilities. In 2017, he became the SERT Executive Officer, managing daily operations for high-risk and emergency situations. He was promoted to Captain in 2020 and to Captain Investigator in 2022, serving as Commanding Officer of the Intelligence Unit and ESU. In February 2024, he was promoted to Deputy Warden and assigned to the Yaphank Facility. He is a proud member of the Suffolk County Sheriff's Office for over 32 years and counting.
Deputy Warden Joseph O’Malley served in the United States Marine Corps from 1984 to 1990, completing four years of active duty and two years in the reserves. He was stationed in California, Japan, and the Philippines, trained in various Marine Corps courses, and was honorably discharged as an E-4, Corporal. From 1991 to 1992, he attended Nassau Community College for Business Administration. He also worked for the Department of the Army from 1989 to 1992, distributing gear to local reserve units and units being deployed overseas while stationed in Bellmore, NY.