Your work experience section is the heart of your resume and the place where readers will spend most of their time. But if you jump straight from your name and contact information to your work experience, you'll lose readers. To make readers want to spend time learning about you and to give them context, you need a compelling introduction.
I recommend waiting until the end of the resume writing process to work on your introduction. Writing an effective career and skills summary is all about picking out common threads and themes, and that's much easier to do after you've created your outline, identified your achievements, and bulletized your experience. Once you're ready to go, here are the steps to writing a compelling introduction: