Digital Wallet & Payment App
UAE-Based Fintech Startup
Project Overview
A UAE-based fintech startup approached us with an ambitious vision: build a digital wallet app that makes everyday payments faster and cheaper for consumers and small businesses across the Emirates. The app needed to support peer-to-peer transfers, bill payments, merchant QR-code payments, and integration with UAE bank accounts — all while meeting CBUAE regulatory requirements.
We designed and developed the iOS and Android app using React Native for cross-platform consistency, backed by a high-availability Node.js microservices architecture on AWS. Security was built in at every layer: biometric authentication, end-to-end encryption, tokenised card storage, and real-time fraud detection using ML models. The app processes transactions in under 2 seconds and supports instant P2P transfers between wallet users.
For merchants, we developed a companion app that turns any smartphone into a POS terminal via QR code payments, with settlement to their bank account within 24 hours. A comprehensive admin dashboard gives the client's operations team real-time visibility into transaction volumes, user growth, KYC status, and compliance metrics. The app launched with CBUAE approval and onboarded 50,000 users in its first 4 months.
Project Details
- Client
- UAE-Based Fintech Startup
- Category
- Mobile App
- Industry
- Finance
- Year
- 2024
- Technologies
- React NativeNode.jsAWSRedisPostgreSQL
The Challenge
The startup needed a CBUAE-compliant digital wallet with bank-grade security, sub-2-second transaction processing, and the ability to scale to 100K+ users — all within a 6-month timeline and startup budget constraints.
Our Solution
We built cross-platform iOS/Android apps with React Native, a microservices backend on AWS, biometric auth, real-time fraud detection, and a merchant QR payment system. The architecture supports horizontal scaling for growth.
Key Features
Peer-to-peer instant transfers between wallet users
Bill payment integration (DEWA, Etisalat, du)
Merchant QR-code payment system
Biometric authentication (Face ID, fingerprint)
Real-time ML-based fraud detection
CBUAE-compliant KYC onboarding flow
Transaction history with spend analytics
Companion merchant app with next-day settlement
Technologies Used
React Native
Node.js
AWS
Redis
PostgreSQL
Results & Impact
50,000+ users onboarded within 4 months of launch
Average transaction processing time of 1.4 seconds
99.97% uptime since launch
Zero security incidents in first year of operation
“Nastrum took our vision from whiteboard to App Store in 5 months. The technical quality is outstanding — we've had zero downtime and our users love the speed. They're not just developers, they're a true technology partner.”
Khalid Mansoor
Founder & CEO, UAE Fintech Startup
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