We have a SAAS which is on Wordpress platform with custom code. From last few months our site running very slow. Need an expert of php, Wordpress and ajax who know debugging pages. For example some of pages which were taking 4-5 secs now taking 20-30 sec.
YOu should have commanding knowledge to work on speed issue and tools such as chrome developer so you can trace issue and fix it.
This can be fix as well as hourly project too