Cashless Tap-and-Go Tipping App

CASHLESS Tap & Go — NFC & QR Transport Payment Platform
We are looking for an experienced developer/team to build CASHLESS Tap & Go, a simple cashless payment system for public and hire transport.
How it works
A taxi, shuttle, private-hire vehicle or other transport vehicle has a unique NFC tag and QR code.
The passenger:
TAPS the NFC tag or SCANS the QR code → payment page opens → selects or enters the amount for the ride → optionally adds a tip → pays.
No app download is required for the passenger.
Core Requirements
Unique NFC/QR payment profile for each driver/vehicle
Mobile payment page
Preset payment amounts + Own Amount
Optional tip amounts + Own Amount
Payment gateway integration
Successful payment confirmation to passenger and driver
Driver/operator registration and login
Driver transaction history
Basic operator/admin dashboard
QR code generation
NFC linked to the same payment profile
Secure backend/database
Responsive mobile-first design
This is not a ride-booking or Uber-type application. We do not require route planning, ride allocation or passenger tracking.
The core system is deliberately simple:
TAP / SCAN → SELECT AMOUNT → ADD TIP → PAY
Please provide your fixed price, development timeframe, proposed technology stack, payment-gateway experience, NFC/QR experience, and examples of similar payment systems you have developed.
All source code and custom development must be handed over on completion.
Budget: Maximum US$750
Timeline: ASAP