The SF 3112 serves as the necessary documentation in support of Federal Disability Retirement. To apply for positions you need to create a Career Pages applicant account.What is the Close Date on a job posting? If I don't see the job that I'm interested in today, how do I find out if the County has more career opportunities? Harris County Engineering Department - Permits. Harris County (the County) is committed to providing equal employment opportunities to all applicants and employees.