JavaScript/CSS developer (Front-end Experienced) with Django/Python Understanding.

This is a frontend project that might require some backend change. It's changing an existing responsive 3 column layout to a 1 column layout with side gutter and existing javascript tooltips changed from mouseover only to appearing all the time. The page will need a toggle between 1 and 3 column views. Our existing responsive site actually collapses to 1 column with small enough width, but we want it as an option all the time for a user regardless of browser width. There will also be design updates.