How can I enhance the checkout experience for PSP on Shopify?

Hi,

I’m looking for a Shopify Experts that can help to create an APP (or in other ways) to enhance the checkout experience for PSP, so that it’s frictionless for our merchants and their customers.

I’ve gone through Shopify Experts list but it seems like everyone is for merchants. Would love some recomondation if you have any for PSP.

Thanks a lot!