This online tutorial is designed to help Miami-Dade County employees, who are seeking advancement, refresh and revise their resumes. Please ensure all employment information on this application is true and accurate, and that no attempt has been made to conceal pertinent information.A completed MDC international application for admission. Do you want to become a Firefighter with the City of Miami? These are the steps you need to take to apply. Welcome to the mdhcv portal. This portal services the Miami Dade Housing Choice Voucher Program and its affiliated programs. Please Read Instructions Before Completing The Application. The quickest way is to Apply for Benefits online. Search and apply for federal jobs.