You should combine a strong three - line summary with searchable keywords, 10 - 15 years of work history, and your education. (resume-now.com)
For example, education and other related training can be given in a one - line summary because these are just for the recruiter to get a note. (topsampleresume.com)
I recommend writing a 3 - 4 line summary using key requirements. (job-hunt.org)