Roles and Responsibilities : Supports or leads the fabrication, assembly, and installation of apparatus and control instrumentation used to test experimental or prototype mechanical, electrical, electromechanical, hydromechanical, or structural spacecraft, instruments, ground systems, or subsystems, and tests and records results, utilizing engineering principles and test technology. Participates in conversations with engineering personnel to resolve fabrication problems relating to specifications and to review test plans, such as types and cycles of tests, conditions under which tests are to be conducted, and duration of tests.