Responsible for technical functions in support of engineering activities such as design, test, checkout, modifications, fabrications, of design circuitry, electro-mechanical systems, or specialized test equipment. Conducts engineering tests and detailed experimental testing to collect data or assist in research work. May perform operational test and fault isolation on systems and equipment. Assignments are semi-routine in nature. Work performed within generally defined parameters. Some degree of judgment required in resolving non-standard problems. Normally receives general instructions on most work.