Provide Advice on Algorithm Development for a Social Networking Platform

I am looking for an expert in algorithm development for websites/social networking platforms that I can advise me on how best to move forward in this area. I'm developing a social networking platform for posting notes from books and documentaries and would like for the site to also provide recommendations on book and documentary pages to follow and other notes to check out based on the user's selected interests, past behavior, and behavior of other users like them. I can provide more details to the person that wins this bid.