Ask HN: Tech stack for Fintech web app

Hello HN,

I want to build a Fintech Web app i am confused with the tech stack to be used, the will have a dashboard with admin ui( each customer having their own admin dashboard) i want to the ui to be beautiful and responsive, I want the app to scalable, which stack should I use? MERN/MEAN? Django? Or something else( I've resources to hire developers )