Python Developer for WhatsApp Business API & Marketing Automation

We are looking for an experienced Python developer to build a WhatsApp marketing automation system using the official WhatsApp Business Platform / Meta APIs. ### Project Overview We have approximately 50,000+ WhatsApp customer contacts. Currently, our team sends marketing messages manually, taking around 5 working days for 3 team members. We want to automate this process with Python so our team can send marketing messages with minimal manual work. Message content should be flexible and editable for different products, offers, sales, and future campaigns. Messages may include: * Product SKUs * New products * Offers and promotions * Exclusive products * Product announcements ### Required Features The Python application/script should: * Import/manage 50,000+ WhatsApp contacts * Send messages using the official Meta WhatsApp Business API * Allow message content to be changed as required * Support text, images, documents/files, and emojis * Process large contact lists efficiently * Handle API responses and errors * Maintain sending status/logs * Track successful and failed messages * Follow Meta/WhatsApp Business policies and rate limits ### Example One campaign may send: "Check out our latest products and exclusive offers. SKU: ABC123. Contact us for more details." For future campaigns, the message should be easily changed according to the new product, offer, or marketing requirement.