I want to build a Public Payment Gateway like shift4 and paypal.

Job ID: 32906500

Budget: $10,000 – $20,000 AUD

I'm looking to build a Payment Gateway like https://paypal.com and https://shift4.com .
I want the website to be really secure so no one can hack into it.
Please only answer if you are serious.

Related categories: PHP Website Design eCommerce HTML Payment Processing