Circuit board and Prototype development

We need a circuit board design. We have detailed specifications of this device. We need a circuit board created and manufactured that will be designed and programmed to do certain features including wifi connectivity with iPod's and Smartphones. It must be concise and cost effective. As a reference, the board will be similar to a raspberry pi but with less components and requirements. The processor should be able to run a miniature form of Linux. The Bidder must have a good portfolio and will be given bonuses for prompt work. Access to Casing and manufacturing is recommended. Your bid will be for design and initial prototypes along with all files for manufacturing. If you can manufacture this item, please specify and we will be more interested.