I would say you need a somewhat cleaner approach to placing things on the page. For instance, two paragraph breaks in a row are very non-idiomatic: try \vspace{2\baselineskip} instead. Instead of manually putting a hard space after punctuation, you probably want \frenchspacing. Also, using \sloppy as the default option is terrible. The purpose of \sloppy is to save a really bad paragraph that cannot be rewritten.
Visually, I agree that it is way too compressed, especially for a CV where the highlights should jump out at the reader. I understand you're trying to cram it into as few pages as possible, but you end up with horribly long lines. It could also use some vertical whitespace. If you must decrease the number of pages, think about trimming the content.
Visually, I agree that it is way too compressed, especially for a CV where the highlights should jump out at the reader. I understand you're trying to cram it into as few pages as possible, but you end up with horribly long lines. It could also use some vertical whitespace. If you must decrease the number of pages, think about trimming the content.
Just my 2 cents, of course.