Fairfax County operates under a merit system, which means that applicants are selected for jobs on the basis of their education, experience and skills. This guide describes how to apply for jobs using the Career Page web site.The process consists of the following steps: New applicants can apply online to be a substitute teacher or substitute instructional assistant through the FCPS Instructional Talent Gateway. 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. The time it takes to complete an application depends on how much information you provide on your basic application. It can take as little as 10-15 minutes. Upon offer acceptance via electronic signature, you will: Complete a Background Check release form; Schedule and complete a Team Member Health Assessment. Title: Admissions Support Specialist. State Role Title: Direct Services Aide III.