React Developer for Sales Dashboard Deployment

What I have: A finished React dashboard for running a sales team: logging deals, part payments and upsells, tracking leads and lead grades, ad spend, commissions, compliance issues, and profit per rep. It is one file and the whole interface is done. I am not changing the design. I have already done the prep to make your side clean: All data reading and writing runs through two small functions, with a comment block right above them explaining exactly how to point them at a real API. You should not need to touch the rest of the file. The auth section is clearly marked. Login and roles currently run in the browser only, which is fine for a demo but not secure, and the file says so where you will see it. Three permission levels are already built into the interface (full admin, standard, and a restricted deals-only view) for you to enforce on the server. CSV export is built into the main screens, and there is a one-click full export to JSON that you can use to seed the database, so the team does not start from an empty system. What I need: Take the one file and turn it into a real, deployed web app that my team (around [X] people) logs into and uses every day. Real accounts and authentication, with the three roles enforced on the server, not the browser A proper database sitting behind those two data functions, replacing the browser storage Hosting and deployment on a sensible stack, set up to run without me babysitting it Keep the interface and behaviour exactly as they are Sensible data safety: backups, and the right people only seeing the right data Seed it from my JSON export so the team starts with the current data