Booking App Backend API Build

I already have the full user-interface for my booking / service app and now need a solid backend to bring it to life. Your task is to architect and develop a clean, well-documented set of APIs that the existing front-end can consume smoothly... (Budget: ₹12500 - ₹37500 INR, Jobs: AngularJS, API Development, Backend Development, Database Design, Laravel, Node.js, NoSQL Couch & Mongo, PHP, Python, RESTful)