Zach Arnett serves as Defensive Coordinator for Mississippi State University's Football program in Starkville, Mississippi. Arnett returns to lead a defensive unit that aims to reestablish its physical, aggressive, attacking-style identity. Arnett previously served as Mississippi State's defensive coordinator from 2020-22, coordinating three consecutive top-five SEC defenses before being elevated to head coach in December 2022.
He spent the last two seasons as an analyst at Ole Miss (2024) and Florida State (2025). Across his three seasons as MSU's defensive coordinator, Arnett's defenses ranked top five in the SEC in 28 different defensive efficiency and production categories during that span, including finishing No. 5 in the league in total defense in each individual season.
