Custom CRM WhatsApp Integration Solution

I run a custom-built CRM and now want it to communicate natively with WhatsApp Business, giving my team a WATI-style interface without moving away from our existing stack. The goal is a direct, stable... (Budget: ₹100 - ₹400 INR, Jobs: API Integration, Chatbot, Chatbot Development, CRM, Customer Support, Node.js, REST API)