Portfolio Website

I need someone that can create the programming+design of a website similar to [login to view URL] but for a portfolio. Should be in html5 or any other recommended language that is universally excepted (not flash of course). It has a background image (photo or video) that adapts to the browser dimension and that is a slideshow. It has a small drop-down menu on the top-left corner where people can see the different categories of the portfolio (photo, advertising, video, contacts) and, once one is selected, a window appears on the middle of the screen. On that window people can see all the content regarding that category (for example photos) or just a part of the content (sports photos, concert photos, etc). Therefore it is important to have a system (simple backoffice or some alternative) that allows the owner of the website to add/remove photos, categories (photo, advertising...) and sub-categories (sports photos, concert photos...). On the attached pdf there is all the info. I am available to listen to suggestions to make the project better/cheaper, for example if you already did something similar. I am also available to answer all your questions. Thanks.