You need a clean Moodle install with latest version.
I'm Moodle system administrator & Linux admin since 11 years in a college. I also have 10+ years PHP development experience and 10+ Linux system admin experience.
I have experience in installing, customizing Moodle, developing & modifying plugins.
I do my development in GIT version control system, so all changes done for you is recorded and can be checked by you.
I can install a Moodle instance & do basic customization for you.
Milestones:
1) The installation first is done on my own server, so you can check & test it. So you don't risk anything, you will see your Moodle before you pay the first milestone.
2) When you are satisfied with the website, I will deploy the Moodle to your server.