I need a Joomla developer

General information for the website: Displaying board of directors from K2 items
Kind of development: Customization of existing website
Num. of web pages/modules: 1
Description of requirements/features: I need to add a new Joomla page to show a hierarchical list of directors.

This link shows how the old website is set-up using a javascript function to collapse/expand information about the director.
http://omran.om/portal/index.php/en/home/sep/boardofdirectors

I need a very similar set-up, but the animation needs to be much smoother, without the overlapping of the content when moving between directors.

Also, it needs to be possible to add directors to different rows, for example, the top row (bootstrap row), will have the top director, then a second row might have two sub directors and so on down the page. I would suggest on a small mobile they all just go to one per row (col-xs-12). Happy to use module positions for this but open to suggestions.

Ideally we would like the content added via the K2 extension but they can be custom HTML modules if that is simpler.

Attached is a mockup of how the page design is laid out, although not with the hierarchical structure, the final result must look like this.
Extra notes: