Android Wallet App Development

I'm looking for an experienced developer to build a basic Android wallet app with QR pay-in and DMT payout functionalities.

Core Features:
User Login
Mobile Number Verification with OTP (Firebase/SMS API)
QR Code Scanning to Add Money
UPI QR Scanner Integration
Utilize PaySprint UPI Pay-in API
Wallet System
Display Wallet Balance
Update Balance Post Pay-in/Payout
Show Recent Transactions
DMT Payout Integration
Send Money to Bank Accounts Using PaySprint DMT API
Wallet Deduction Post Successful Payout

Technical Requirements:
The app should be developed in Kotlin.
A simple, clean, and minimalistic user interface is required.
Secure API handling is essential.
Use Firebase as the backend.
Well-commented source code is a must.

Deliverables:
APK for testing
Complete source code
Basic documentation
Setup guidance if needed

Ideal Skills and Experience:
Proficiency in Android development using Kotlin.
Experience with Firebase and secure API integration.
Ability to develop simple and minimalistic UI.
Strong documentation skills.

Looking forward to your bids!