Wordpress e learning without plugins & android app

I'm looking to create an e-learning platform over WordPress without using any plugins. looking for an experienced developer to help me design an online learning platform in WordPress (without LMS plugins) and Android app.The job requires a thorough understanding of WordPress and capabilities that go beyond the basics. If you have experience creating learning platforms, I look forward to hearing from you.

Features:
payment and rebate system
admin panel
student panel
Dynamic Quiz Builder
Youtube/Vimeo video integration
login and home page
etc etc..