Here are a few tips on what to include in your job posting: 

Be specific. 

Job seekers want to know as much as possible about the position for which you are hiring. That way they can decide whether or not they feel like a good fit and want to apply.

Make lists, not paragraphs. 

While job seekers want to know as much as possible, we find that using bullet points and headers to lay out your information is less intimidating to potential applicants. 
We recommend including job duties, responsibilities, qualifications, and expectations.

Tell them about you! 

Potential applicants want to know all about the company they would be working for, so be sure to fill in your company profile, and include your website.