Hey, trading platform is just the front end, the most complex bit of a trading platform is the backend or what is called the execution management system (EMS). EMS comprises of order management and risk management, which talks to the exchanges on one side and the front end.
So the first question you need to ask is if you want to build the front end or the back end (EMS). If you are planning to build the front end, then you need to integrate with a brokers existing backend. To be able to do this, you need to first have a minimum viable product and then go pitch to a broker.
You can use Kite connect APIs to build the trading platform and come back and pitch to us for integration. You don’t need any membership with NSE and BSE for this, you will be plugging on the broker’s membership.
For you to be able to get any funding for this type of idea, you need to have an MVP (minimum viable product). No one will fund just an idea like this unless you have a background in building such a platform in the past.