White's first athletic director position was for the Buffalo Bulls, where he was at the forefront of Buffalo's rebranding to become "New York's big time athletics department". He initiated a long-term capital funding project to develop Buffalo's athletic facilities, notoriety, reputation, and stature to represent the State of New York. During his time as Athletic Director, White restructured Buffalo's athletic department through its management and coaches. His most notable change was the replacement of Reggie Witherspoon for Bobby Hurley, a former 2-time NCAA champion with Duke University and son of star coach, Bob Hurley. At Buffalo, White oversaw an athletics program with 20 varsity sports and more than 500 student athletes. White also launched the New York Bulls Initiative, which he believed served as a comprehensive initiative to cultivate a local and national presence. This initiative emphasized "NEW YORK" on the school's uniform, court and field athletic logos, rather than BUFFALO. The initiative was hugely unpopular among UB alumni, and after a campaign led by 1961 alumnus Angelo F. Coniglio, it was dropped and the logos now prominently display "BUFFALO".
In November 2015, White was hired as the athletic director of the UCF Knights, replacing interim AD George O'Leary. In the position, White also serves as the executive vice president for the University of Central Florida Athletics Association, the private non-profit corporation that is responsible for the administration and financial management of the UCF Knights athletic programs. As UCF's director of athletics, White oversaw the hiring of a new head football coach, Scott Frost, and was given responsibility of directing over $70 million in athletic facility construction and upgrades. In addition to Frost's hiring, White's administration has overseen the hiring of current men's basketball coach Johnny Dawkins, baseball coach Greg Lovelady, and football coach Josh Heupel. In 2016, he and South Florida Bulls AD Mark Harlan oversaw the creation of an official "War on I–4" competition series, rebranding the long-running unofficial rivalry between the two schools.
White generated significant media attention, both positive and negative, for himself and UCF by declaring the 2017 UCF Knights football teamnational champions in a January 1, 2018, Twitter video published moments after their Peach Bowl victory over the Auburn Tigers, reinforcing the claim the following day with national champions branding on UCF's verified accounts and plans to hold a Disney World parade, hang a national champions banner at Spectrum Stadium, and pay the assistant coaching staff bonuses for their performance. The claim came in response to UCF not being selected for the College Football Playoff despite an undefeated season and conference championship. The claim sparked considerable controversy and debate over whether the College Football Playoff should be expanded to include teams such as UCF that are not in Power Five conferences. Despite the controversy, White fulfilled all his promises—including the Disney World parade, banner, and coaches' bonuses—and distributed national champion rings. Reactions to White's claim extended past the sports world to the Florida state legislature, with Florida governor Rick Scott signing a resolution declaring UCF national champions on January 8, 2018.