Watto

Overview

Watto is a multi-platform solution bridging consumers, merchants, and financial operations in the gift card industry.
It streamlines digital and physical gift card management, shared money pots, and merchant reconciliation in a secure, scalable environment.

Problem

Watto needed a unified platform to handle multiple financial flows:

• Digital & physical gift card sales and redemption
• Shared cagnottes with instant voucher generation
• Merchant reconciliation & payout tracking
  All while meeting high security and compliance standards for financial services.

Role & Team

Full-Stack Developer working closely with product, finance, and compliance teams.
I implemented end-to-end features across mobile and web, optimized database queries, and integrated merchant APIs.

Constraints

• Compliance with financial regulations
• Support for unstable networks and low-end devices
• Multi-platform (web + mobile) with consistent UX
• Real-time data accuracy for balances and transactions

Solution

• Frontend: Next.js + Tailwind CSS for responsive, performant UI
• Mobile: React Native for cross-platform merchant and user apps
• Backend: NestJS + PostgreSQL + Redis for reliable, high-speed transactions
• Cloud: AWS for secure deployments and scaling
• Features included:
  • Gift card issuance, redemption, and balance tracking
  • Cagnotte creation with instant voucher generation
  • Merchant dashboard with reconciliation tools
  • Role-based access and audit logs

Impact

• Enabled real-time issuance and redemption for both digital and physical cards
• Reduced merchant reconciliation time by 40%
• Improved system uptime and reduced support requests

Tech Highlights

Next.js • React Native • Tailwind CSS • NestJS • PostgreSQL • Redis • AWS