Connect all my socialmedia pages at on page

Hi everyone, I got a small webshop which I would like to get a bit more focus on my social media, like Facebook, Twitter and Google+. I am therefore looking for an developer who can make a page, where I can connect all my socialmedia groups/accounts at one, and make updates on every single socialmedia without loggin on each. Further would I like it a list where I can see each comment made on the update, so that I got a possiblilty to answer them. When the user asks a question, I would like to software to be able to "detect" specific words, like "Size", "Clothing" and then the software should be connected to my backend, giving examples of links that I could provide to the user, to create sales. I will ofcourse need to have some kind of login, to get into the page and then connect links and webshop to the page.