This was my first impression as well. Additionally, by using multiple columns to avoid a second page, OP makes the document harder to read and thereby obscures

This was my first impression as well. Additionally, by using multiple columns to avoid a second page, OP makes the document harder to read and thereby obscures his full work history. I recommend, following any rework, handing this to a few friends (preferably non-technical), in person, for feedback on readability and appeal.