If you would like the opportunity to have a job on campus, please review the Job Database and complete the job application. Once you complete the mandatory payroll forms, we will email you a Student Employment Form.Thank you for your interest in applying at Allegheny County. The following information will assist you through the application process. Apply for Administrative Assistant. Please fill out the form below and click Submit to submit your application for consideration. Employment Application. Step 1 of 6 - Applicant Details. You can type directly into the Cover Letter and. A. Identifies the position for which you are applying and how you learned of it. b.