PHP - Codeigniter developer - Expert

Hello All, I'm looking for a system with all the functions and functionalities given in the links below. We will keep both the sites in mind. [login to view URL] [login to view URL] I need 1) Three more functions such as record voice for speaking exam 2) Automatic writing and 3) Speaking marking by artificial intelligence Access of these videos will be on subscription basis. Videos should not be able to be recorded on the screen / the screen recording processing is needed. For this particularly I need Zgrade security. So I need to know in detail what all technology or 3rd party library or plugin will be used. Pls don't only bid with your standard attractive messages. Share some relevant project links that will attract me. Can't give chance to prove yourself. For entire system the technology will be PHP CI(Codeigniter) Payment gateway - Stripe Server details - to be discussed. I want from you are: 1. Come up with your questions but some relevant. 2. Timeline 3. Budget Best regards, Bhavin