The service engineer job description is to service the various machinery used in large industries. They are also known as field service engineers or even maintenance engineers. They analyze and service equipment machinery that is worn out. Machinery is made of iron or other such particles. Wear and tear is just a part and parcel of its functioning. Though, there can be no way to stop it from happening, there are still ways with which deterioration can be reduced in the machine. Here step in the service engineers who service the machine completely.