MVP para fintech

Hello! I'm looking for an experienced development team to build an MVP for my fintech project. Specifically, I need a MVP that can handle both a web app and a mobile app, both with payment processing capabilities. I'm open to suggestions in terms of the technology stack, so if you have any advice for me in that regard it would be greatly appreciated. As such, I am looking for experienced developers who can bring their expertise to bear on this project. My budget is negotiable depending on what the MVP ultimately entails, so I am happy to discuss proposed budget adjustments during negotiations. Thanks in advance!