We need someone with good knowledge of Magento and payment gateway and PHP coding.
Apply only If you have experience and can handle out of the box or difficult task.
knowledge about aws server will be good too.
I have built many Magento payment module to integrate with the payment gateway. I can help you with any kind of work relate to payment gateway for Magento.
Feel free to contact me and share more detail about your requirement, I will give you a detail quotation.