The answer
Because the frontend consumes real APIs, and building the backend first means the frontend connects to real endpoints instead of mocks that might not match. This avoids the shape-mismatch bug when you finally connect them.
A Roadmap to Build the DevTinder Full Stack Project
Why build the backend before the frontend in DevTinder?
More FAQs in A Roadmap to Build the DevTinder Full Stack Project
In order: backend setup, schema design, auth APIs, core APIs, frontend setup and auth, UI build, real-time chat, and deployment. Each step builds on the last into a full, deployed app.
The backend setup. Initialize the Node project, install Express and Mongoose, connect to MongoDB, and set up the basic Express server and folder structure. The backend foundation comes first so the frontend has real APIs to call.
After the core auth, profiles, and matching features work. Real-time chat builds on top of matching, so add it once the core flow is done and you have a working connection between two matched users.
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