John Tierney began his career as an Assistant District Attorney in Bronx County, New York. He began as a Criminal Court Assistant before accepting appointment to the position of Trial Assignment Part I (TAP) leader. Immediately thereafter, John was quickly promoted to the position of Designated Felony Liaison for Juvenile Offenders. In this role, he successfully prosecuted and tried gang-related assaults and robberies, felony gun possession cases, conducted felony interrogations and successfully prosecuted a multiple defendant rape trial. He finished his tenure with the Bronx District Attorney’s Office in the Narcotics Trial Bureau.

In private practice, as a result of the strong investigative and trial experience obtained early in his career, John has successfully handled general liability and premises liability matters, non-profit charitable, religious and educational institutions, Title 59 Immunities for municipalities and municipal police departments, and has obtained outstanding results in a vast array of personal injury, civil litigation, commercial litigation, coverage and criminal defense matters.

The Law Office of John Tierney represents individuals as well as an outstanding array of clients as Litigation Counsel. These include Starbucks Corporation, Markel Insurance Company, James River Insurance Company, Stonecreek Specialty Insurance Company (Mesa), and The Redwoods Group YMCA Program. Mr. Tierney has successfully defended multiple appeals of summary judgment in the Appellate Division of the State of New Jersey. From Pre-litigation Risk Management through Appeal, the Law Office of John Tierney is ready and armed to successfully represent you.

All firm attorneys are licensed to practice in both New Jersey and New York Courts.