The incumbent serves primarily as a CTVHCS nighttime Polysomnographic Technologist for the Sleep Center located in Killeen, Texas. The Polysomnographic Technologist works under the direct supervision of the CTVHCS Sleep Clinic Supervisor and the general supervision of the Sleep Medical Director providing comprehensive evaluation and treatment of sleep disorders. A Basic Requirements: Citizenship. Citizenship of the United States. (Non-citizens may be appointed when it is not possible to recruit qualified citizens in accordance with chapter 3, section A, paragraph 3g, this part.) Education. There are no specific educational requirements for this occupation. Education may be substituted for experience only at the GS-4 and GS-5 levels. See the grade requirements part of this standard for info