Build a Website

I'm starting to build a website and need to connect it to my database. Basically, I have a sentir template and I've hired someone to customize it. For this job, I will provide a test page in HTML and CSS, please check this link: [login to view URL] What I need is to connect it to my [login to view URL] database and also implement the presence, status and messages using PubNub. I need a javaScript programmer with experience on [login to view URL] and pubnub.com. This is a test page, I have a lot more pages to develop, I just need to know if developer will be able to achieve what I want, since I already have the design (my designer will provide HTML+CSS files), and backend (my database already exists for mobile apps), and need someone to get both together.