I have a Joomla website, I'm using template from Gavick. I have done many changes. I need to fix some errors on it: responsive design it not well done (I need the built-in responsive to be fixed and make it better), I'm using jsn-mobilize but I prefer not. Also I need to delete unnecessary css and js to make the website quicker.
I need person who has a very strong experience in Joomla and Building Extension for next tasks and long term relationship.