Development of a user platform, with the possibility of different language versions and the following functions:
register, login, user profile, different types of users (free and paid), payment functionality (Paypal), calendar per user, automatic email reminders of calendar events to users and statistics of user data.
The platform manages fitness and trainings data of users.
I am looking to find a developer that is experienced and is able to built a first version quickly (for the suggested project volume) and extend it step by step (for extra payment). Please specify what you can built for what budget.