Tumblr Developer needed

We are in need of the developer was familiar with the Tumblr API as we need to develop a couple of things on our website, humantheme.com. 1. Implementing [login to view URL] on the a Google advertisement(300x250) right sidebar. The advertisement begins at the end of the right side bar and scroll down to the bottom of page as implemented on any of the [login to view URL] article e.g. [login to view URL] 2. Implementing [login to view URL] with the social media toolbar that is located on the right-hand side of each article. 3. Implementing orbit slideshow([login to view URL]) at the top of our homepage. 4. Making popular post widget on the sidebar.