Grimmett-Norris joins the program after two seasons as assistant coach and recruiting coordinator at Keiser University. During his tenure, he helped coach the men's team to their fourth NAIA championship title and women's team to its first title. He was also named to the Slovakian National Team coaching staff. Grimmett-Norris also previously served as a graduate assistant for the University of Arkansas, where the Razorbacks were top 15 in the NCAA. Grimmett-Norris also served an assistant coach for Wagner College.
Grimmett-Norris graduated from Virginia Tech in 2017, where he competed on the swim team for three years. He was also a member of both the US Swimming National Team and National Junior Team.