All Services Engineering & Architecture Grad. engineer in air and refrigeration $25/hr · Starting at $25 German engineer , with many years of experience in refrigeration and process technology will gladly support you in the processing - commissioning of their projects worldwide. About $25/hr · Ongoing Download Resume German engineer , with many years of experience in refrigeration and process technology will gladly support you in the processing - commissioning of their projects worldwide. Skills & Expertise ChillerHeatingRefrigerationSolarVentilation 0 Reviews This Freelancer has not received any feedback.