Open with a strong, attention-grabbing summary. Your summary should provide an overview of your company and expectations for the position. Hook your reader with details about what makes your company unique. Your job description is an introduction to your company and your employer brand. Include details about your company culture to sum up why a candidate would love to work for you. Include an exact job location. Provide an exact job location to optimize your job posting so it appears higher in job search results.
Prepare job summaries, if relevant. You can use the job description template you use for each position that you advertise by filling in the template with the information that is relevant to that position. However, if you do (or expect to do) a lot of hiring of a particular position, you might make a special template that includes a summary of that job. This will save you some time.