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Jim Janci has over 28 years of experience as a litigator.


Jim has been with the firm for over two years handling multiple municipal court matters and complex civil litigation matters. He is also available for consultation on criminal matters involving substance abuse, expungement and drug court.


Prior to joining McArthur Law, Mr. Janci served as Assistant Prosecutor and
Senior member in the Trial Unit of the Prosecutor's Offices of Hunterdon and Warren Counties for over  28 years. Mr. Janci has received certification from the New Jersey Supreme Court as a Certified Criminal Trial Attorney.  Jim has appeared in the Appellate Division on multiple matters, including the excessive sentencing calendar.

Practice Focus

  • Litigation

  • Criminal Defense

  • Personal Injury​


Prosecutorial Experience


2015 - 2018
Alternate Municipal Prosecutor for Mansfield Township & Belvidere
Municipal Courts in Warren County.


2010 – 2015

First Assistant Prosecutor in Hunterdon County.
Retired from Prosecutor’s Office in 2016.


1987 - 2010
Assistant Prosecutor in Warren County performing various tasks in
Juvenile Domestic Violence Court. 

Chief Assistant Prosecutor of Juvenile Domestic Violence Unit for 12 years

Tried well over 50 Jury Trials and 200+ Non-Jury matters.


Member of the Drug Court Team.


Bar Admissions

New Jersey Bar, 1987



J.D., Thomas M. Cooley Law School, Lansing, Michigan, 1984

B.A., History/Political Science & Law Enforcement, University of Scranton, 1977


Professional Associations

New Jersey State Bar Association

NJ  Supreme Court - Certified Criminal Trial Attorney

Member of the American Bar Association 

Warren County Bar Association President 1995-1996

Certified Police Academy Instructor - CLE courses, Criminal Law Topics





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