Applying for a job with Maricopa County at jobs.maricopa. Gov is a simple online process.Writing Your Cover Letter. Applicants are required to submit a cover letter and resume showing how the applicant meets the minimum and desired qualifications. We consider applicants for all positions without regard to race, color, religion, sex, national origin, age, disability or veteran status. To apply for a job in Maricopa County, visit the county's employment website at jobs.maricopa.gov. You can search for open positions and apply online. Job Details ; Title, Custodian10 Month ; Posting ID, 11016334 ; Description.