Cryptocurrency exchange

I am looking for someone to build a crypto currency exchange, like [login to view URL] , [login to view URL] just exchanging no trading. I read you are experienced in creating such a solution. Starting with 10 kinds of cryptos btc, bcc, eth, ltc, xrp, neo, qtum, strat, powr, kmd.. like to add new currencys to the system like @ [login to view URL] - 1 we send cryptos from our own wallet to client , need to add several wallets different currencies - 2 we send order from client strait to our exchange wallet( add several exchanges) and place order, after order is filled then send currency to our own wallet and then to client.. solution 1 is prior, second nice to have maybe there is a better solution. Please do not use third party tools, we like to be independent. We ourselves do the design. We like to have an open code because we want to view it and adjust it if neccesary. Also because we want to check the security in the code. Please also document the code well so we know how it works. We like to have a simple clean and secure solution. The code/engine the most important part because we can do the building ourselves.