There's a lot going on here but see if I can help you out.
First is alignment which has a lot going on.
The outer most area is different width on all 4 sides. This should really either be 1 width, or at most 2 widths (sides & top/bottom):
Then internally, nothing quite lines up correctly. This makes it difficult for a reader to follow. See in this close up how the letters aren't straight down:
Then there's all sorts of variations make it very difficult to follow. Here in red I tried to note it as best I could. Basically you've got completely different formats, and even fonts on here. All of them should follow the same format. If anything isn't clear in my notes let me know:
Then we've got more alignment issues over here:
The alignment is the biggest thing. Get everything in a format that fits. Then you can look at the typography. I'd also suggest ditching the word RESUME at the top. And the icons by your contact information. There's no reason for any of it and it takes up a huge chunk of paper.
Hope this helps you a bit.