This guide describes how to apply for jobs using the Career Page web site. The process consists of the following steps:The following information will assist you in applying for jobs with Fairfax County. You may also download this helpful brochure to assist you. To initiate the application process click the Apply tab. The Apply tab is located toward the top of the posting next to Job Details. New applicants can apply online to be a substitute teacher or substitute instructional assistant through the FCPS Instructional Talent Gateway. STEP 1: Complete the Student Employment Application. List your present or most recent employer FIRST. Include U.S Armed Forces experience.