Working from schematics, diagrams, written and verbal descriptions, layouts, or defined plans utilizing manufacturing test development or diagnostic equipment performs functions such as design, test, checkout, modification, fabrication, and assembly. Coordinates with engineers in the set-up and calibration of tasks, as well as performing rework and quality testing related to the production of parts, components, subassemblies, and final assemblies. May assist in developing methods and procedures to control or modify the manufacturing process and to collect design data or assist in research work.