Fire Extinguisher Tech Service. In business since 1950, Gallagher Fire Equipment Co is a well respected firm in the Fire Protection and Life Safety industry. We are seeking a Fire Extinguisher Service Technician to join the team in our Livonia office. This is a full-time position eligible for full benefits including health, dental, 401k and paid time off. Job Purpose. Our technicians perform vital recertification inspections and installation. of ...