Joomla API Integration Specialist

I have a Joomla-based site that already runs on a custom template and a handful of home-grown extensions. What I now need is seamless integration of several third-party APIs so the platform can pull live data, display it cleanly, and store what is necessary in MySQL without slowing anything down... (Budget: $250 - $750 USD, Jobs: API Integration, Bootstrap, CSS, Database Management, Joomla, MVC, MySQL, PHP)