Assist industrial engineers in such activities as quality control, inventory control, or material flow methods. They conduct statistical studies or analyze production costs.

Assist electronics engineers in such activities as electronics systems and instrumentation design or digital signal processing.

Assist electromechanical engineers in such activities as computer based process control, instrumentation, or machine design. They prepare layouts of machinery or equipment, plan the flow of work, conduct statistical studies, or analyze production costs.

Assist electrical engineers in such activities as process control, electrical power distribution, or instrumentation design. They prepare layouts of electrical transmission or distribution systems, supervise the flow of work, estimate project costs, or participate in research studies.

Assist engineers in determining the practicality of proposed product design changes and plan and carry out tests on experimental test devices or equipment for performance, durability, or efficiency.

Apply theory and principles of mechanical engineering to modify, develop, test, or calibrate machinery and equipment under direction of engineering staff or physical scientists.

Apply engineering theory and principles to problems of industrial layout or manufacturing production, usually under the direction of engineering staff. They perform time and motion studies on worker operations in a variety of industries for purposes such as establishing standard production rates or improving efficiency.

Apply theory and principles of environmental engineering to modify, test, and operate equipment and devices used in the prevention, control, and remediation of environmental problems, including waste treatment and site remediation, under the direction of engineering staff or scientist. They assist in the development of environmental remediation devices.

Test or modify developmental or operational electrical machinery or electrical control equipment and circuitry in industrial or commercial plants or laboratories. They usually work under direction of engineers or technologists.

Lay out, build, test, troubleshoot, repair, and modify developmental and production electronic components, parts, equipment, and systems, such as computer equipment, missile control instrumentation, electron tubes, test equipment, and machine tool numerical controls, applying principles and theories of electronics, electrical circuitry, engineering mathematics and physics.