Nowadays, many companies allow you to apply for an open position via your social media profile. One thing is for sure: If an employer considers you as a legitimate job applicant, he will look up your name on the Internet. The question that you should ask yourself: Is he going to appreciate the info he will find out about you? In any case, you should remove sensitive or awkward content, like pictures from a party where you obviously drank too much, and add a convenient structure to your professional profile. Needless to say that leaving few online footprints does also have a positive effect on your privacy.