The very last section of your resume that is read by hiring authorities (recruiters, hiring managers, and HR) is most likely your Summary. And in some cases, it isn't read at all. This means two things: write a strong Summary that really grabs their attention, or don't include one at all. We opt for the first option and will explain how a strong Summary is written.
First of all, don't call this section your Summary. Write a header that grabs the reader's attention, such as Outstanding Accomplishments or Value Statement.
Secondly, make this section short. Thirdly, include some metrics if you can. Fourthly, tailor it to each job. Finally, write it in the present tense.
Don't Write a Summary
The second option is not to include a Summary at all. If you don't feel confident enough to write an exceptional Summary statement that grabs the reader's attention, then do not add one to your resume. In place of the Summary, simply substitute it with a professional title at the top of your resume. (Ideally, it should match the job for which you're applying.)
Here's an example of a more impactful Summary for an Operations Manager:
Outstanding Accomplishments
Oversees up to 20 employees across departments, achieving near-perfect operational efficiency.
Develops process improvement supply-chain strategies that result in cost savings (by 23%)
Spearheads initiatives that increase companies' visibility (at 3 companies) through social and digital media.
Establishes attainable goals, trains new and existing employees, and promotes a positive team structure.
MassHire Program & Services are funded in part by US Department of Labor (USDOL) Employment and Training Administration grants as well as non-federal funded grants. Additional details furnished upon request.