Jay began his career with the Boston Police Department in August, 1983 as a Cadet. He was assigned to the Mounted Unit, Audit & Finance, Operations, and Fleet Maintenance.

In November, 1986, Moccia was accepted into the Boston Police Academy, and upon graduation was posted to Area A, which at the time covered Downtown Crossing, Chinatown, Government Center, North End, Beacon Hill, Charlestown, and East Boston. When District 7 was re-opened in East Boston (after being shuttered for several years due to budget cuts) he was stationed there, for almost ten years.

An opportunity arose in February 1995 to transfer to D-4, which covers the South End, Back Bay, Fenway-Kenmore, and Lower Roxbury neighborhoods. He is presently assigned there, and when not performing Union duties, he patrols Newbury St/Copley Square and Back Bay on foot or by bicycle.

During the course of his career, Jay has also volunteered for several temporary assignments to Mobile Operations, during Sail Boston, Gulf War, Biotech Conventions, and other special events. He has received numerous Citations, Commendations and letters of thanks. Jay is motorcycle and bicycle certified.

Officer Moccia is a regular contributor to the PAX Centurion and is also the First Half BPPA Rep at D-4. He was elected BPPA Secretary in December 2017 and assumed his leadership term in January of 2018.

A lifelong resident of Boston, Jay and his wife raised their 6 children (1 girl, 5 boys) there. 3 of his sons also currently serve as Patrolmen in the Boston Police Department. In his spare time, Officer Moccia enjoys spending time with his family, playing hockey, cooking, and travelling.