Real WordPress developer who has good knowledge of API & Plugin Development (just implement already developed plugin)

Hello WordPress expert, I need someone expert in WordPress who has good knowledge of APIs and plugin development. I want to connect api and setup our plugin which was already developed. Looking real genuine expert who can implement such functionality... (Budget: $10 - $50 USD, Jobs: API, API Integration, CSS, HTML, PHP, Web Development, Web Services, WooCommerce, WordPress, WordPress Plugin)