Summary Positions to be filled are in various organizations at the following NASA Centers - Ames Research Center, Armstrong Flight Research Center, Langley Research Center, Glenn Research Center and the Katherine Johnson IV&V Facility. NASA may fill positions in any of the following grade levels listed in this announcement (GS-09/10/11/12 levels). Examples of positions that may be filled include: Jet Engine Mechanic, Machinist, & Sheet Metal Tech, Life Support Systems, Aircraft Mechanic, Egress Tech. Responsibilities Duties described below are at the highest grade advertised. Duties assigned at lower grade levels will be of more limited scope, performed with less independence and limited complexity; duties will be commensurate with the grade of selected employee. Perform technical work activities for assigned aircraft, systems, labs or facilities supporting facility test operations and test execution to customer requirements. Operate technical systems (mechanical, controls, electrical,...