Shopify WhatsApp Order Notifications App

I’m looking for a developer who can build a private Shopify app that automatically sends WhatsApp messages whenever an order moves through its life-cycle. The focus is purely on transactional alerts, not marketing blasts... (Budget: ₹1500 - ₹12500 INR, Jobs: API Development, JavaScript, Node.js, OAuth, PHP, Python, Shopify, Shopify Templates)