To apply for county jobs, you will first need to create an account and complete a profile—similar to a resume—on the website. You can sign up for Job Interest Cards through the organization's web site so that you are notified when jobs become available.She got handed a one page letter stating she is being offered a job as a teacher contingent upon meeting some conditions such as passing background check. New applicants can apply online to be a substitute teacher or substitute instructional assistant through the FCPS Instructional Talent Gateway.