Hello there! I was looking for new jobs and I saw your project, got interested. I have plenty experience with Drupal optimization and server tuning.
For a better knowledge of your problem, please explain to me how is your server/service environment (how many servers do you have stacked running Drupal, are you using AWS, DigitalOcean, etc.?, what is the configuration of each server, what is linux distro installed, Nginx or Apache2; MySQL, MariaDB or Percona; PHP already with OPCache working? Are Memcache, Varnish installed, if not, can they be installed?).
You may want to see some works of mine here with Freelancer, please check my feedbacks as there are many performance projects well done. My price and time is fit: Usually three days is my deadline for real, considering heavy installations/modifications and then a great gain of performance, but I'll be observing and tweaking it all during a week more.
Presenting myself, my name is Marcelo and I'm from Brazil. I am a CS graduated with more than 17 years experience in IT market, and +8 years experience with Drupal. I have other some good works at my portfolio, beyond the comments. I'm with 100% conclusion rate and positive feedbacks here at Freelancer.com and I pretend to keep that.
If interested, call me on chat or award this bid!
Regards,
Marcelo.
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