Add a sub child category api for flutter app in laravel

I am looking for a developer to add a sub child category API for my Flutter app in Laravel. My category structure currently has multiple levels of sub-categories. I have specific requirements for the sub-child category API, including access control. I prefer API key-based access control. The ideal candidate for this job should have experience with Laravel and Flutter development, as well as expertise in API development. Additionally, they should have experience with access control and be able to implement API key-based authentication.