Need A Developer to Create A wallet for CryptoCurrency -

[ExtraMileGames]

Hi,
We are looking for some developer who can create us a wallet for cryptocurrency that may be integrated with our mobile games.
It should be something like Faucet Microwallets, But since we need some specific security PostBack mechanisms and purchase and deposit ability for users we need to get our own wallet.

Major Things we need:

1. Mobile Friendly Wallet system
2. API and POSTBACK for adding , subtracting and fetching userbalance etc.
3. Ability to send and receive crypto in their wallets.
4. Purchase Crypto by using USD easily?

We can discuss the details . We would need a vague estimate on how much would this cost.

We are thinking of integrating it for both bitcoin and another altcoin.