set up advanced credit and debit card payments on my website

I am looking for a Freelancer to set up advanced credit and debit card payments on my website. I prefer to use PayPal as the payment gateway, and require a system that supports one-time payments only. I do not have any specific security requirements for the payment system, and want the payment system to be as simple and secure as possible. The Freelancer will need to have a good knowledge of advanced payment systems and functionality. The job will involve setting up the payment system and making sure it works correctly. Additionally, the Freelancer must be capable of troubleshooting any issues that may arise. This is a great opportunity for a Freelancer who wants to demonstrate their experience in this field.