Here is what we will need to do.
1. Use open source php application.
2. Work on it to make it take a load of 1000 bids a second.
We have some ideas around what needs to be done. We need somebody who can quickly look at the code, set it up on a server (I will provide amazon access), and then load test it.
And then improve it to take that much load.
3. Implement different bidding strategies (3 different strategies).
4. (Maybe) a dashboard with analytics and controls.
Required skill: Solid understand of PHP, and performance.