Mobile AppFinance2024

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
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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.

What We Delivered

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

Tech Stack

Technologies Used

R

React Native

N

Node.js

A

AWS

R

Redis

P

PostgreSQL

Impact

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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