Automated trading software - fast api project

Looking for someone to work with me on developing a trading software for a few exchanges through their API's. Can be programmed in whatever you're comfy with, must run on mac/pc and I already have an interface ready to be filled in with data/functions/developed further and made into an installer. This will probably have updates over time so I'll need someone that is available long term and source files must be delivered with the project as well. Experience with math/algo's/trading engines/etc is recommended, do not take this as your first project please. Previous examples of work required to prove you can take on all aspects of the project. I have another team that does my software protection/licensing and ecom integration however if you can do that as well then it's more money for you however not a prerequisite. It may sound a bit vague re my needs however there is a reason for that and more details will be given to qualified vendors. I look forward to your quotes and am keeping this up for a week as I need to move on it asap.