This guide describes how to apply for jobs using the Career Page web site. The process consists of the following steps:Fairfax County operates under a merit system, which means that applicants are selected for jobs on the basis of their education, experience and skills. Apply to Restaurant Staff, Sonographer, Retail Sales Associate and more! New applicants can apply online to be a substitute teacher or substitute instructional assistant through the FCPS Instructional Talent Gateway. Welcome to Fairfax County's job application process! Job Opportunities: Education Director, Traditional Summer Camp Director, Performing Camp Director, Producing Director. Title: Land Surveyor Supervisor.