iOS core 2D engine

We are looking for a developer to build us our own engine, replacing Playground SDK. We have our own framework in C++ that we use to manage the game logic, animations, screens, buttons and other controls, particles, etc etc. What we are missing is the low level coding that interfaces those things with the hardware. We need an OpenGL interface, memory manager, strings, maps and vector libraries with international text support all for iOS. We can afford to pay for this development, but we would need it to be well structured, easy to read code and soon after we will likely ask for modificiations for it to work with PS3 and or PSP etc. We will need full source code and it would have to be free of any license restrictions from you or anyone else. If you are not familiar with PLayground SDK, here is the link... [login to view URL] We don't use any LUA. We also dont use their animation, user interface controls etc. We do need an engine that can receive the calls to draw stuff, handle input, memory etc. I apologize for any mistakes in the text above, I am not a programmer. If the project goes ahead we would sign an NDA, send you a working app + source code in Playground 5 SDK and be open for any questions that you m¡ght have.