In addition to federal jobs, you may want to look at support-type organizations that serve the federal government (Commissary system, military exchanges, etc. ususally labeled NAF - non-appropriated funding). It can prove to be a valuable stepping stone to a federal GS job since its VERY helpful to have a contact at the agency you're looking into. Also consider the DoD school system - they frequently look for teachers, substitutes, and other personnel. Hope this helps!!