We're looking for someone who can help us drive a lot of traffic right now and in ways that aren't necessarily traditional.
I see what you mean now, you want to find somebody who can drive traffic, but most people who apply for jobs after grepping for marketing don't have the tech/dev skills that you are looking for.
Hard role to fill - are the founders doing this work atm?
Somebody mentioned this down below, but you should setup an affiliate network. There are tons of affiliate marketers out there who do nothing all day but drive traffic. I am surprised that they haven't already approached you - every startup I have launched we have received emails from potential affiliates/online marketing partners after being featured in blogs etc. These guys (there is an entire community out there) are always actively looking for new sites to promote to their networks (usually websites and mailing lists)
Checkout Commission Junction (cj.com) and hang out on the boards that these guys do, like Sitepoint and Webmasterworld/online_marketing