Hansen spent the previous four seasons on the staff at the University of Las Vegas before coming to ODU. Serving as the Head Assistant Coach, he led several swimmers to NCAA competition and even to the Olympics. Before heading west, Hansen worked with the Hokies of Virginia Tech and Villanova. Under his tutelage at Va. Tech, both Hokie squads finished the 1997-98 season with the best records in school history. He was awarded Atlantic-10 Coach of the Year honors that year after the women finished second, and the men fourth. At Villanova, he coached four student-athletes to All-American status while working with the distance freestyle and breastroke swimmers.
Prior to Villanova he coached the 1994 NCAA runner-up in the 200 free, Kari Hagg, at the University of North Carolina. In all, Hansen has coached 22 All-Americans, nine USA National Team members and two Olympians.
Hansen graduated from Glassboro State College in 1991 with a Bachelor of Arts in health and physical education. He immediately went to work for the NCAA Swimming and Diving Championships before joining the staff at East Carolina. While with the Pirates he earned a Masters of Arts in exercise and sport science in 1994