Slowik has been part of Kyle Shanahan's staff since 2017, the same year DeMeco Ryans joined the 49ers. Ryans served as San Francisco's defensive coordinator for two years before being hired by the Texans to be their new head coach on January 31.
Slowik served as a defensive assistant with Washington before joining the 49ers as a defensive quality control coach. He and Shanahan were a part of Washington's coaching staff for three years together (2011-13).
With San Francisco, Slowik moved on to become an offensive assistant (2019-20), offensive pass game specialist (2021), and offensive passing game coordinator (2022).