Mobile wallet and merchant payments for [CLIENT NAME]
- Client
- [Client name]
- Sector
- Fintech / mobile payments
- Engagement
- Mobile App Development → Mobile Care
- Platforms
- iOS + Android
- Timeline
- [X months]
- Status
- [STATUS]
01 — Problem
[Client] needed its customers to send money and pay merchants from their phones, without visiting a branch — and it needed that product to be trustworthy from day one.
[Two to three sentences of context: the business, its customers, what was happening before PEYN, and why it mattered commercially.]
02 — Engineering challenge
Money movement on mobile is unforgiving: a dropped connection can’t become a double payment, and a login flow can’t be both secure and frustrating.
- C.01
Safe retries
Every payment request idempotent, so retries on weak networks never charge twice.
- C.02
Secure access
Biometric unlock, secure token storage and session handling.
- C.03
Release discipline
Automated builds and staged rollouts across both stores.
03 — Architecture
[Short explanation of the architecture and the key decisions behind it. Replace the diagram below with the real system.]
04 — What PEYN delivered
- D.01Discovery, requirements and delivery plan
- D.02Cross-platform iOS and Android application
- D.03Payment-flow architecture with safe retries
- D.04Automated build and release pipeline
- D.05Crash monitoring and analytics
- D.06Technical documentation and ongoing Mobile Care
05 — Technology
- Flutter / Dart
- iOS
- Android
- Spring Boot
- REST APIs
- Firebase
- CI/CD
- Crash monitoring
- Analytics
06 — Outcome
- [—][Verified metric · source]
- [—][Verified metric · source]
- [—][Verified metric · source]
“[Client quote — published only with written permission.]”