Chief of EMS Job Description. Position: Emergency Medical Services (EMS) Supervisor. Rank: Chief. Reports To: Board of Directors. Status: Exempt. General Definition of Work. The purpose of this position is to manage the Jaffrey Rindge Memorial Ambulance EMS Services. Duties include, but are not limited to. personnel management, personnel hiring, coordination with outside agencies and medical direction, maintain federal, state, and local requireme...