Mangin, 34, joins the 49ers after spending the previous two seasons (2019-20) as a defensive analyst at Louisiana State University.
Prior to his two years at LSU, Mangin spent the 2018 season as an analyst at the University of Alabama. He joined Alabama after four years (2014-17) as the special teams coordinator/defensive ends coach at Northwestern State University. For the 2012-13 seasons, Mangin served as a graduate assistant at LSU prior to his first coaching stint at Northwestern State in 2011 as a special teams/tight ends coach.
A native of Lewisville, TX, Mangin spent five years (2005-09) at LSU as a walk-on fullback. He graduated from LSU with a degree in education (K-12) with a concentration in kinesiology. He later earned his master's degree in sport administration from Northwestern State in 2012.