I am in NY and am looking for a Moodle developer to assist in the creation of an E-Learn site ... that will be supporting up to 3000 users....
The base site is already created ... there are fine tune items and wish list items that we need...
Please feel free to email me if you can help and or are interested......
The best solution for me would be to just call any Moodle Partner and ask for a proffesional work on it (tuning), at a reasonable price: http://moodle.com .
Anyway, you can try on your own, and ask here for specific help when needed. I would take a look at: http://docs.moodle.org/en/Performance , review http://docs.moodle.org/en/Administrator_documentation and find specific answers in the forums http://moodle.org/mod/forum/search.php?id=5 .