Go to the Recruitment and Selection link of Human Resources, select the appropriate link to our Career Centers to apply for any open Pima County position. This guide describes how to apply for jobs using the Career Page web site.The process consists of the following steps: Are 18 years or older (except summer youth or youth worker program). Please carefully read and answer all questions. Pima County Library Employment Application - Free download as Word Doc (. Online Application Guide. Need help completing the application form? Q) Where do I begin? A) To begin the application process, please select a user name and password that you will easily remember.