Quinn is an Upper Valley native who grew up in Hartford, Vermont. He received a B.A. from Duquesne University in 1999 and a J.D. from Suffolk University Law School in 2008. Between college and law school, Quinn served as an infantry officer in the U.S. Marine Corps, and currently serves as a judge advocate with the Marine Corps Reserve. Quinn is licensed to practice law in both New Hampshire and Vermont, focusing his practice on estate planning, trust and probate administration, real estate, and business planning. He has also served as Town Moderator (2017-2018) and Planning Commissioner (2015-2018) for the Town of Hartford. He now resides in Grantham, NH.