Tarra - OAU marketplace

Campus Marketplace — Built for 40,000+ Students

Built a full-stack campus marketplace from scratch as sole engineer — product listings, second-hand sales, service bookings, and a payment escrow system in a single authenticated app.

Tech Stack: React Native, Expo, TypeScript, Express.js, MongoDB, Flutterwave

Highlights: Live on Google Play · 4.5 stars · Multi-role account system · Subaccount-based escrow · EAS deployment