Create chrome extension

Hi, I'm looking for a freelance/team who have already coded several Chrome extensions and Firefox and can prove it. I need an extension which will be distributed as SAAS for users: So you have to know how to manage the security of the login, grant access and back office to manage the licences/users. It automates actions on a website (Visit profiles, contacts, send messages....) and grab data of users to put them on a "website" to allow the user to manage his data. (Basically, filter users, add some tag) just like a mini CRM. (So there is database management somewhere, you have to know how to handle it.) You will have to manage the design of the extension + control-panel/CRM of the user. I have some example of extension which does the same thing, and I know the design I want. - I'm looking for a long-term business. - I need to see your previous work. - I have experience with Freelancer and I know the bidding price doesn't mean anything. We will discuss it later when all the project is clear. The most important part is your experience and your ability to manage what I want. Please, start your message with the word "Chrome" so I'm sure you've read my project. Give me a Dropbox or anything with links of your previous work. All the User management part is really important, so you have to know how to handle everything and it's better if you have example of extension you've made which include it. Please, keep in mind that at the end, I'm not looking for "freelance" but real partners, for that, I will ask you several questions, to be sure you know how to manage what I want. Don't lose your time if you are not 100% sure you can handle it.