Build a Litecoin Trading Bot to interface with OKCoin.com

I'm requiring a software to auto-trade Litecoin (LTC) on OKCoin.com. This software will be hosted on my private web host, and will interface to OKcoin via API, to trade 24/7. The software will require inbuilt logic and algorithm to know when to buy and when to sell, and how much. The aim of the software is to trade to gain a profit. There needs to be options to increase or decrease parameters such as 'total tradable coins', 'max trade', etc, which can be set from control panel setup on my web host. Interfacing with API is not the challenge. The challenge will be programming the algorithm to make it trade at a profit. This software will require testing of success before sign-off. The ideal applicant will have some understanding of Bitcoin/Litecoin, and how the trade process works. In application to this job, please let me know your understanding of Bitcoin/Litecoin, and briefly explain your solution on how you will program the algorithm for the auto trading. Please do not paste generic cover letters, thanks.