Employers make snap judgments when glancing at your resume.
If they see unrelated job titles or skills the likelihood is very high that they will make an immediate assumption that you are not qualified for the job you want.
Adding to this problem is the fact that employers don't have the time to read through each of your job descriptions to determine if you have the skills they need.
You Must Do That For Them! The design of your resume must highlight the most important information about your work experience, skills and education.
At first glance this information forms the image that employers have of your skills and abilities.