I need a full-stack mobile developer who can take this idea from concept to App Store / Google Play release. The goal is simple: send each user the right deal, at the right moment, straight to their WhatsApp chat—always with clear consent and an easy opt-out. Core flow • Users download the iOS or Android app, sign up, and set their interests. • We capture their stated preferences and, with permission, passive location data to fine-tune relevance. • When a match is found, the backend pushes a rich offer to the user’s WhatsApp via the WhatsApp Business API. • Inside the message (or in-app), the user can complete an in-app purchase, share the deal on social platforms, or choose to be redirected to the partner’s site. What I’m expecting from you – Native or cross-platform build (Swift/Kotlin or Flutter/React Native—open to your recommendation) – Secure backend (Node.js, Python, or similar) to handle user data, consent records, and message dispatch at scale – Clean integration with WhatsApp Business Cloud API – Admin dashboard for partner onboarding and campaign management – App Store & Play Store submission, plus deployment scripts – Full source code and brief hand-off documentation Acceptance criteria • iOS and Android apps pass store review. • Messages reach users’ WhatsApp accounts within five seconds of trigger. • Opt-in/opt-out flows meet GDPR-style consent requirements. • Personalized targeting demonstrably uses only declared preferences and location data. If you’ve built messaging or offer-delivery products before, I’d love to see them. Let’s make personalized deals truly personal—without the spam.