I can use Backend API with Laravel, Symfony, Yii, CakePHP, Node.js, Ruby on Rails, Django, Spring. My backend development process are as follows. 1. I read and understand client's requirements carefully. 2. Next I make a API documentation included public url or API url, HTTP verb, Request, Response, database collection or table and comment. 3. I decide suitable database language whether I use relational database or nosql database. 4. Next I design database structure using DBdesigner or MySQLworkbench. 5. I developed backend API with testing using Postman or Swagger.