Build a Website

Please read fully and ask any question that may come to mind- I am in need of an App developer and website design company for a startup company. I will need the App to interact with hardware/software currently in development. I will also need a website that will interact with the app- have two main areas- admin(for lack of a better term) and users. Each side of the website will have multiple pages. User side will be mostly information, admin side will require more in depth programming: it will need multiple log-in protected areas as well as accounting DB storage and reporting. The App, as well as the site, will need to have multiple payment portals for end users as well as suppliers. This will NOT be a weekend project. This is not something I want thrown together. This is a startup company and I am rather particular in what I want, as well as how I want the programs to function. In addition, I know what I want- but do not have the knowledge and experience to program it- that is where you come in. I prefer function over fancy looks- Frankly I am tired of going to a website with my 4G phone and having all my bandwidth used loading all sorts of fancy flash crap. In all reality this is a job for a team of people- however if you are an individual and believe you can accomplish the task feel free to ask questions. I also will require physically meeting whom I will be paying. I don't care if you and your buddy are self employed out of your parents garage. (I've been there) However, I am not going to drop thousands of dollars on someone that is afraid to meet me. I just want a good job done. I will eventually require web hosting as well as on-going tech support- which will come during the testing phase. I have a realistic time frame- 3 months. My hardware should be ready at that time. If you do not have experience writing an app that can communicate and control a bluetooth/wifi device you will NOT be able to do this project. The app will need to have the ability to log a user (as well as an admin section), payment ability, as well as history, balances, etc. Please feel free to send reference links in any response- I guarantee I will look at them. You will also require to sign a non-disclosure agreement. Thanks for your time and please ask any questions that you may have- I may not be able to give you details, but I will answer them the best I can. Thanks for your time.