When the application is the business, we want a typed SPA, an API that owns the rules, and a database that will still make sense in three years.
There is a stack we reach for when the product is a real application: React and TypeScript on the client, Express on the API, Postgres underneath, and a host that we can actually operate. It is not the only stack in the house. It is the one we trust when the frontend and the backend need to move independently, and the data model is the asset.
TypeScript is how we stay kind to future us
A SPA without types becomes folklore. Shared types between client and API catch the dumb bugs before a user does. We are not precious about it. We are practical: the booking flow, the payout status, the tenant record. Those objects should not be reinvented in three files with three different optional fields.
Postgres is the source of truth
Jobs, caches, and search can lie. The relational model should not. We put tenancy, money, and permissions in Postgres first, then let the SPA be a client of that truth. Migrations are part of the product. If you cannot explain the schema on a whiteboard, the UI is decorating confusion.
Operate it like you mean to keep it
We deploy these apps to platforms we can see: logs, previews, rollbacks, env that is not a mystery. Railway is one of the places this work has lived in production. The point is not the vendor. The point is that a senior full-stack team owns the path from commit to a URL a customer can hit, including the 502 at dinner.
If you need a product, not a theme, bring the workflow. We will tell you whether this stack is the right dog for the hunt.