Early career Following his playing career, Sullivan worked a season as a student assistant and wide receivers coach at Gardner–Webb. He became an important figure in the team's drafting and was described as the "right-hand man" to
general manager Brian Gutekunst. In 2018, he was promoted again, to co-director of player personnel, along with Jon Wojciechowski. In 2025, Sullivan was interviewed by several teams as a general manager candidate, including the
Tennessee Titans,
Las Vegas Raiders, and
New York Jets.
Miami Dolphins On January 9, 2026, Sullivan was named the
general manager of the
Miami Dolphins, replacing
Chris Grier who was fired midway through the
2025 season. Ten days later, the Dolphins chose to pair Sullivan up with former Packers defensive coordinator,
Jeff Hafley, who the team hired as their new head coach. ==Personal life==