Before beginning at Loyola in 2011, he held postdoctoral positions at University of Chicago and University of Notre Dame, and prior to that he completed his PhD in David Lodge's lab at Notre Dame. Reuben’s research is focused on the prediction and prevention of invasive species. He has worked extensively on the development and testing of risk assessment protocols and works with economists to develop guidance for how risk assessment tools are applied. He also runs a field program in the Chicago River and Lake Michigan investigating new and spreading invaders.