**Position Objective:** Perform preventive and corrective maintenance on refrigerated containers (reefers), ensuring their proper operation and preservation of the cold chain for the safe transportation of perishable goods. **Main Activities:** Inspect refrigeration systems of containers, including compressors, control units, air circulation systems, and electrical components. Carry out preventive and corrective maintenance on refrigerated containers, identifying and resolving faults in the refrigeration system, temperature control, and electrical operation. Diagnose technical issues in the refrigeration system and other container components using specialized tools and measurement equipment. Repair and replace defective parts of refrigeration systems, such as compressors, valves, thermostats, electronic controls, and electrical wiring.