Integrate 7 Payment Gateways into PHP Code @$2 per payment gateway

I'm looking for a skilled PHP developer to integrate multiple payment gateways into my existing PHP code. The project is open-ended and will require a high level of proficiency in PHP and experience with various payment gateways. Please note, specific payment gateways and their exact purpose will be discussed during the selection process.

Ideal Skills:
- Proficiency in PHP
- Experience with integrating payment gateways
- Good understanding of E-commerce, Donation collection and Subscription services

I want you to add these payment gateways:
1. Aamarpay
2. Authorize.net
3. BTCPay
4. Binance
5. Blockchain
6. Cashmaal
7. Checkout
8. Coinbase Commerce
9. Coingate
10. CoinPayments (normal, fiat)
11. Flutterwave
12. Instamojo
13. Mercado Pago
14. Mollie
15. NMI
16. Now payments (checkout , hosted)
17. Payeer
18. Paypal
19. Paypal Express
20. PayStack
21. PayTM
22. Perfect Money
23. RazorPay
24. Skrill
25. SslCommerz
26. Stripe (Hosted, Checkout, Storefront)
27. 2Checkout
28. Ayden
29. WePay
30. Alipay
31. Klarna
32. PagSeguro
33. iDEAL
34. Worldpay
35. PayU