Hello,
My name is Andrei and I'm from Romania, Europe.
I do manual optimization, checking file by file for errors, analyzing php/mysql queries, optimizing images, minify js/css, optimizing apache headers, cache and more.
You will pay only after the job is done and if you are happy with the results.
I can assure you that our collaboration will bring good results.
Please check my profile/portofolio here on freelancer, I just finished similar projects.