Write some Software

I need a person with a vast knowledge on how back links checker and keyword analysis tools work. I need a software/crawler that works like on the [login to view URL] website, where you can check for the back links a website has inbound and outbound, how many different domains there are referring pretty much the same as ahref is already doing. There should also be keyword analysis feature like on [login to view URL] where you can track a keyword and find out the competitiveness of the keyword. I would need everything build from database to website and of course the crawlers. Is this something you are capable of doing? please give me a bid on the project. It should have the features to update once a week instead of once a month if selected. It should have a fast reporting system and the possibility to export to csv of pdf I should be able to analyze backlinks to see if they are good or bad for seo purposes and to see if there are any toxic links which are not relevant to the seo campaign and highlight them. Online platforms which have such tools are seomoz, ahrefs and majesticseo and this should work the same. There should be a client(subscriber) feature where an individual can subscribe for access and there should be a payment feature there as well. I don't have the knowledge on how all this works in the backend so I'll be using a friend to communicate with you. For people giving a bid please also give me an explanation on how this works in your mind (the crawler) and how you intent to do this. Please be detailed as I will use this in the selection process to avoid bids fake bids I PAY UPON COMPLETION, but I am willing to put out some milestone. Please write Read this in the subject when you bid on the task.