AI WhatsApp Data Extractor

I need a small but rock-solid tool that sits between several WhatsApp groups and my data stack. The goal is simple: as soon as a new post hits any of those groups, its text content and the poster’s contact... (Budget: ₹12500 - ₹37500 INR, Jobs: AI Development, API, Google App Engine, Google Sheets, Java, NLP, Python, Software Architecture)