Sergeant Patrick Mushinskie started his law enforcement career with Los Angeles County Sheriff's Department in late 2001. He worked for Los Angeles County Sheriff's Department for 4 years, assigned to the Inmate Reception Center (jail system) until mid-2005. Sergeant Mushinskie lateralled to the Riverside County Sheriff Department and was assigned as a patrol Deputy at the City of Moreno Valley. He worked patrol, becoming a training officer within a couple years. From patrol, he was moved to the Moreno Valley Station Burglary Suppression Team (BST), a plain clothes detective team focused on burglaries and theft related incident in the city.
In the summer of 2011, Sergeant Mushinskie was transferred to the Palm Desert station, assigned to patrol. He worked patrol for the City of Palm Desert, Rancho Mirage and the county areas of Desert Hot Springs and Thousand Palms. From patrol he was moved to the Palm Desert Special Enforcement Team (SET).
In June of 2015, Sergeant Mushinskie tested for Riverside County Sheriff's Department K9 team. He was accepted to the team and assigned to the Palm Desert Station as the station's K9 handler. He was assigned to the Palm Desert station as the K9 until 2020, when the Riverside County Sheriff's Department centralized the K9 program under the Special Enforcement Bureau (SEB). In June 2020, he was moved to the city of Temecula as the station's area K9 handler. Sergeant Mushinskie remained with the K9 team until he was promoted to the rank of Corporal and transferred to the Hemet Station in July of 2023.
In September of 2023, Sergeant Mushinskie was promoted to the rank of Sergeant and transferred to the Thermal Station, assigned to the station patrol. In February of 2024, Sergeant Mushinskie was selected as the La Quinta Special Enforcement Team Sergeant.