Simpson finished his third year as an Assistant Coach for the Mad Ants in 2018-19. Simpson previously worked for the Indiana Pacers in the video department assisting in film breakdown and statistical analysis. He first joined the Pacers as a video intern in 2008-10. Simpson returned as a Graduate Assistant at Wheeling Jesuit University (Division II), where he completed a Master’s Degree. Simpson has also assisted as a coach for the Pacers’ summer league teams.