Brian Fleury is in his second season with the 49ers and first as an offensive quality control coach. He spent the 2019 season as a defensive quality control coach with the team. He joined San Francisco after spending the previous three years with the Miami Dolphins as the team's football research analyst (2016) and director of football research (2017-18).
In his roles with the Dolphins, Fleury worked closely with defensive coordinator Matt Burke to help prepare for upcoming opponents and follow NFL trends. He assisted the team's defensive backs in 2018 after assisting the defensive line in 2017 and linebackers in 2016.