Major McCartney is a native of Rochester, New York. He attended the PLC-Combined class of OCS and completed the course with the highest academic average out of 600 of his peers. He graduated from Brown University in 2009 with a Bachelors of Science degree in Applied Mathematics and Economics, and was commissioned in the United States Marine Corps in June of that year.
Upon completion of The Basic School in January 2010, Second Lieutenant McCartney attended and graduated as the honor graduate from the Basic Communications Officer Course in June 2010. He reported for duty to 3d Marine Regiment in Kaneohe Bay, Marine Corps Base Hawaii where he was assigned as Platoon Commander of the 120-man Communications Platoon. In March 2011, he was chosen by Colonel Bierman, Commanding Officer of 3d Marines, to deploy as an Individual Augmentee Infantry Officer with Landing Force Cooperation Afloat Readiness and Training (LF CARAT), where he served as the company’s Weapons Platoon Commander.
Upon returning from deployment, Major McCartney took over as the S-6 of 2d Battalion, 3d Marines, and he deployed with that unit on the first resumed rotation of the Unit Deployment Program (UDP) to Okinawa, Japan, where it conducted over 15 bilateral and multilateral exercises spread throughout the Pacific. Upon returning to Hawaii, Major McCartney was assigned as the Officer-in-Charge of the battalion’s preparations for both the Commanding General’s and the Field Supply Maintenance Analysis Office (FSMAO) Inspections.
Following Active Duty, Major McCartney served as the Communications Officer for Combat Logistics Battalion 25 in Red Bank, New Jersey, and then as the S-6A and Communications Officer for 23d Marine Regiment in San Bruno, California. He currently serves as the Company Commander for the Defensive Cyberspace Operations – Internal Defensive Measures (DCO-IDM) Alpha Company in Concord, California.
In his civilian career, Major McCartney completed a Master’s degree in Computer Science in May 2015 at Rochester Institute of Technology and began a career as a software engineer at Google. He has also worked as a Technical Program Manager at Facebook, running the company's external cybersecurity training programs with a special focus on the veteran population within the Bay Area.
Major McCartney’s formal school completions include The Basic School and Basic Communications Officer Course. His personal decorations include the Navy and Marine Corps Achievement Medal (2nd award).