I already have the frontend ready; what I now need is a solid backend that connects WhatsApp Cloud through Meta’s Graph API and orchestrates everything in n8n. The core purpose is automated messaging. Concretely, the system must let me schedule outgoing messages, send approved templates, and track every response so I can feed the data back to the UI in real time. You are free to pick the stack behind n8n (custom nodes, webhooks, or native HTTP requests) as long as the final solution is reliable and clearly documented. Experience with WhatsApp Business Cloud API, Graph API permissions, webhook verification, and n8n workflow design is essential—I want someone who has done this before and can point to similar projects. Deliverables I expect: • Fully functional n8n workflows for message scheduling, template-based sends, and response tracking • Secure endpoints or webhooks that my frontend can hit for send, reschedule, and status-check actions • Step-by-step deployment/env setup notes so I can reproduce the integration in staging and production I’ll provide the approved WhatsApp templates, server access, and any required keys. Show me where you’ve worked with WhatsApp Cloud or n8n, and let’s get this automation live.