Re: We are looking for Bitcoin traders for new peer-to-peer platform.
How much profit can I make per day from trading on your platform?
What a brilliant question! 
Trading can't guarantee any profits, you might lose all of your money though. The amount profit you earn would depend on your ability to take momentum. If you can buy at lower price and sell at higher price then you could absolutely gain profit. The lower price you buy at, will give you opportunity to gain more profit when you sell. Pretty simple right? in fact, NO!
You have obviously no idea of what P2P trading is.
You actually can more or less guarantee profits if you sell and buy on p2p because of the trade. This is not the same as trading on an exchange, this is sort of like a money changer business if you think about it. Buying from people and selling to others. The turnover is important here because you're making money from spreads in price (so it doesn't really matter what price BTC is, unless it crashes or spikes while you're settling trade).