Web services / API

General information for the website: We are developing a website and Mobil App. Kind of development: Customization of existing website Description of requirements/features: We are developing a website and Mobil App, We are looking for experience freelancer to solve problem with Web services and API to connect through Postman testing or Mobil APK. Localhost connectivity established via Postman but not the live site connectivity. Only very experience freelancer please contact us. Extra notes: