A Kiln Operator, also known as a FirER, is responsible for operating and maintaining kilns, which are large ovens used to heat materials such as clay, glass, and metal. They must ensure that the kiln is operating safely and efficiently, and they may be required to adjust the temperature and humidity levels of the kiln. Additionally, they may be responsible for loading and unloading materials from the kiln, as well as cleaning and maintaining the kiln.