Hello, I’m a Linux System Administrator with more than 10 years experience, I actually manage almost 40 VPS’s on DigitalOcean, Bluehost and Hostgator platforms, and I do performance jobs for increase pagespeed and gtmetrix scores over all websites on those servers, I do SEO jobs too.
You need to know that to get a best score on pagespeed you need to take the best choices since the beginning of your project, framework, theme, plugins, etc. All that features counts to make your website faster, if you chose a framework like Wordpress and use a wrong theme your website maybe has compromised to get a bad score, or if you use plugins like revolution slider that runs a lot of JavaScript files.
I can to make all improvements that your server and website need to get the best score possible, but I can’t promise you the scores you requested because it depends of the all features I told you before.
I can help you with your request, please don’t doubt to contact me if you need my services, I’ll be in touch.
Best regards,
Junnes Henning