Click on the job title, and then Apply, to complete the application. You can use Remove if you want to delete an application without completing it.How do I apply for a job? To apply for a job in Hillsborough County, visit the Hillsborough County Human Resources website. Dont send cover letter unless requested. STEP 1: Apply for a Position Apply online and submit the application for employment. Learn how to write effective resumes and cover letters, view sample resumes and cover letters, and get tips for completing job applications. The cover letter is often critical. A good cover letter puts your résumé in context and persuades the prospective employer that you are a good match for the position in question. A cover letter accompanies the resume when submitting an internship or job application.