Comprehensive Payment Gateway Integration

I'm seeking an experienced developer to integrate a third-party payment gateway for my platform. The gateway needs to support multiple payment methods including Credit/Debit Cards, E-Wallets, and Cryptocurrency.

Requirements:
- Support for Credit/Debit Cards via Visa/Mastercard, American Express, and Discover.
- Integration of E-Wallets such as PayPal, Apple Pay, Google Wallet, Venmo, Zelle, and Cash App.
- Cryptocurrency payment option.

Ideal Skills and Experience:
- Proven experience with payment gateway integrations.
- Familiarity with various payment methods and providers.
- Strong technical background and problem-solving skills.
- Ability to deliver secure and reliable payment processing solutions.

Please provide examples of previous work in your bid.