Ok, a little help you shall have.....
The site is not optimized at all. You rely to much on java and Divi can be a beast if you don't understand when to use features and when not to. Fix your technical issues. For a company of 150 + professional programmers, this performance score does not bode well for you !
Stop your keyword stuffing with the word "HIRE".
This site is aimed at the U.S. market place and you need to hire a native speaking "American English" copywrite editor and have them proof read and correct your content. As it is it reads badly.