Don’t make the mistake of sending the same blanket résumé to every job posting you discover. Do some legwork.
Find out a little bit about the company beforehand and what they may be looking for in an employee. Sometimes you can get a job description.
If not, find out as much as you can about the position and market your skills accordingly. One way to do that is to check out what’s required for similar positions in other companies.
Sending out the same résumé to everyone may fall flat because, although you have the skills companies are looking for, they might not jump off the page in a general resume.