gig posted elsewhere not sure how to delete
Must be located in the US.
Aww... show stopper.
Requiring an NDA also doesn't tend to go well in the open source community.
If I had to guess skill level, I would assume this would require someone on the skill level of advance to pro.
As you're posting on a hobby forum I can't help but getting the feeling that you have nowhere near the budget required for the person you're looking for.