Enhancement on Existing Flutter App and PHP Website

We are a Startup currently rebuilding our money transfer application, which includes:

A Flutter-based mobile app

A PHP-based web portal

The core functionality for both platforms is already in place on our existing mobile and web portals. We're now looking for a skilled freelancer to help with the next phase of development:

Scope of Work:
1. Reskin the Mobile App and Web Portal
2. Apply new designs provided in Figma
3. Update UI components with slight modifications to the existing logic where necessary
4. Ensure smooth responsiveness across devices and browsers

Integrate Payment Gateway

1. Integrate a reliable third-party payment processor for funding and withdrawals
2. Ensure secure and scalable implementation

Integrate KYC Service

1. Connect a third-party KYC/identity verification service
2. Slight modificaiton to existing onboarding and document verification flow

Ideal Candidate:
*Proven experience working on fintech apps, especially involving wallets, remittance, or payment flows
*Strong proficiency in Flutter and PHP
*Familiarity with integrating payment and KYC APIs (e.g., Paystack, Flutterwave, Dojah, VerifyMe, etc.)
*Preferably based in Nigeria, or with solid knowledge of the local fintech and compliance landscape