Knowledge of the principles of electrical engineering, and electronic manufacturing to test components, systems, or subsystems under development for their functioning, efficacy and conformance to design requirements, or to test prototypes for feasibility. May involve ability to plan, create test procedures, conduct, and evaluate developmental, qualification, acceptance, and flight test and checkout requirements testing in accordance with NASA, Military or Commercial Specifications of air, space and ground systems, components, piece parts, as well as integrated electronic systems or sub-systems. Includes knowledge of environmental test techniques used to verify workmanship and validate operations in a relevant environment, including vibration, shock, acoustics, electromagnetic interference and compatibility (EMI/EMC), depressurization and vacuum operation, and thermal cycling.