iPad developer needed to help resolve memory problems

We have an iOS project for iPad, developed in Xcode 4.3 and tested on iPad iOS 5.0.1. The software is nearly fully functional, but suffers from memory problems and crashes occasionally. We have attempted profiling it to identify the fault but are unable to figure it out. We need an expert who is very experienced in identifying and resolving memory management issues on iOS using Cocoa. We require the work to be done very urgently, and the developer will need to sign an NDA before any files are handed over. Please respond by briefly stating how your skills will be suitable to us, mentioning what you'll do to help us, and if possible provide links to published app in the App Store so we can see some finished work. We appreciate developers who have good communication skills in English as we will need to discuss technicalities in detail.