Flutter Authentication & Payments Integration

I'm seeking an experienced Flutter developer to build an authentication page and integrate multiple payment gateways.

Key Requirements:
- Authentication Methods:
- Email and Password
- Social Media Login
- Two-Factor Authentication

- Payment Gateway Integration:
- PayPal
- Stripe
- Google Pay
- Phone Pay

Ideal Skills and Experience:
- Proficiency in Flutter development
- Experience with integrating authentication and payment systems
- Knowledge of implementing two-factor authentication
- Strong understanding of security best practices

Please provide your portfolio and relevant experience.