McCartney joins New England after spending the last four seasons with the Cleveland Browns (2020-23), first as an offensive assistant (2020-21) and then the last two seasons (2022-23) as the tight ends coach. Following his playing career as a quarterback at Louisiana State (2007-10), McCartney began his coaching career as a graduate assistant/offensive assistant coach with LSU in 2011. He continued as a graduate assistant/offensive assistant coach at Colorado for two seasons (2012-13), before serving as an offensive assistant with Cleveland in 2014. McCartney then served as a quality control coach with the San Francisco 49ers in 2015, returned to LSU as a graduate assistant/offensive assistant coach in 2016, then returned to the 49ers for two seasons as an offensive assistant/quality control coach (2017-18). He spent the 2019 season as the quarterbacks coach with the Denver Broncos before re-joining Cleveland in 2020.
