Hello Sir,
I am the expert freelancer here. I am on the 6th position through out the world to deliver the quality job. I have deliver here more than 395 + projects with 100% client satisfaction.
I can help you with Express API with PostgreSQL interaction and OpenPay
I have more than 5 years of the experience in Amazon Web Services, Javascript, node.js, PostgreSQL
Please ping me for more discussion.
Thanks.