business directory: design + deployment

We need a company to help us make a business directory for our client. We need complete solution: design, deployment, IOS apps, etc… With regards to design we have a clear understanding on how it should look, we just need the PSD files, • Design is critical, hence we favor UI, UX designers with an eye for minimalistic design, attention to details, typography, layout, colors, font, etc.. • Only those that are able to provide us with a clear history will be considered. • Please include the word: cosmopolitan in your reply, to ensure you have read our requirements. Programming part: We would prefer using an existing solution such as SobiPro (joomla) , however we will consider a custom made solution: ruby on rails, etc.. We need to understand your solution: why you recommend it? Limitations? Etc… Programing language needs to be discussed. More details will be provided on request.