Deputy Chief Matthew de la Rosa was first hired by the City of Englewood as a police officer in December of 2002. During his career, Deputy Chief de la Rosa has been a Patrol Officer, a Detective in both the Main Detective Bureau and Juvenile Bureau, a Squad Supervisor in the Main Detective Bureau, a Lieutenant assigned to the Administration Division and a Captain where he oversaw the Uniformed Division and Administration Division. Additionally, Deputy Chief de la Rosa has been a member of the following units or has served in the respective capacity:
- Bicycle Unit
- Alcotest Operator and End DWI Award Winner
- Community Affairs Unit
- Internal Affairs Unit
- Emergency Services Unit, where he also served as a Commanding Officer
- Firearms Instructor
- Active Shooter Instructor
- CPR Instructor
- Bergen County Rapid Deployment Force, where he also served on the Command Staff
- Academy Instructor for both the Bergen County and NJ State Police Academies
- Task Force Officer with Homeland Security Investigations, the Drug Enforcement Administration and the Special Narcotics Unit of New York.
In addition, Deputy Chief de la Rosa has also earned Bachelor of Arts Degree from Franklin and Marshall College with a concentration in Finance and Accounting, a Master's Degree for Administrative Science from Fairleigh Dickinson University and a Certified Public Manager from Rutgers University.