Hi,
I have read your exact requirement in which you have mentioned that you want your existing site should be more speedup.
Please share the URL of the site so I can check the current performance.
Relevant Skills and Experience
Following some steps I will do:compression,caching,leverage browser caching,optimize images minify css and js,add expires headers,database optimization etc
Proposed Milestones
$100 USD - Reduce load time
I will optimize it as per your guidance so the load time will be under 1S with a great performance.
Query: which server version you are using?