wordpress plugin developer

I am looking for a WordPress plugin developer who can help me add new functionality to my website. The main goal of the plugin is to add this new functionality seamlessly and efficiently. I have a clear idea of what I want the plugin to do and would appreciate suggestions on the best way to achieve it. The ideal candidate should have experience with WordPress plugin development and be able to integrate the plugin with other services and APIs. Additionally, they should be able to ensure that the plugin doesn't affect website speed and increases security.