Looking for a UI/UX Designer for Mobile App (IOS)

We're a small product development firm located in Philadelphia, PA. We're currently working on a systems product project (hardware + software) and are looking for a UI/UX designer with moderate experience that can assist us with the development of information architecture, wire-frames, workflows and mobile app screens. It's an 8 week project but the UI/UX part happens during the first three weeks. It's a really cool project that will potentially be used widely. Project starts next week (22nd of January) but if this post is still up the project is still available. Contractor will need to sign an NDA.