SMT machine operators are responsible for surface mount technology (SMT) machinery maintenance, operations, and repair. They use the equipment to solder delicate electrical parts. The solder machine connects electrical components as part of an assembly line, also called a printed circuit assembly. An SMT machine operator understands the basic technology of the equipment and its programming, can set up new orders, and troubleshoot as needed. The job duties include inspecting the final products, recording data output, and meeting all daily quota needs.