CNC Machine Operator Job Description. Overview. We are seeking skilled CNC Machine Operators to join our dynamic manufacturing team on 3rd shift (12:00 A.M. to 9:00 A.M.) at our brand new facility located in Plattsmouth. The ideal candidate will have a strong background in operating CNC machinery and a keen eye for detail. A CNC Machine Operator is responsible for operating and maintaining CNC machinery to produce precision parts according to spe...