Performs multidisciplinary professional engineering work involving the application of electronics, mechanical, aerospace, and/or other engineering disciplines or specialty areas to determine the business and technical needs of customers in the acquisition, development, or sustainment of weapon systems, sub-systems, support systems, equipment items, or an equivalent product. Ability to devise and evaluate criteria, parameters, characteristics, and interrelationships for design approaches; to assess the impact of new technology on current systems and processes; and to gather, assemble, and analyze facts, form conclusions, and devise and recommend solutions to problems.