Step by step service development?

Question

Node.js

Hello! I ran through the toaster with a similar question, but the answer was not complete for myself.

And so there is a task to implement MVP for SaaS, so far only the web. Suppose there is a technical specification describing the functionality of the service and a prototype / design of how everything should look and work. I want to take over the entire development.

Stack:
- frontend (nuxt - because a lot of things out of the box, suitable for rapid prototyping)
- backend (node.js - most likely express)
- db (firebase or postgress)

There is enough experience in the front, and a lack of it for the backend. For example, with node.js, I had only a little experience writing a parser bot, and the backend needs requests that I never wrote. Same with database - no experience.

Question:
1. How to start developing back or front?
2. Study a node for backing or a framework (express) and a database in order to write a more or less workable backing or take firebase?

The service implies a bulletin board and will include modules such as: authorization, CRUD, file upload.

Perhaps I missed something, I will be grateful for the answers!

Answer 1

Describe contracts according to the logic of the service,
Implement them without authorization
Base better use local
authorization Fasten afterward to ready-made controllers, in those actions that require authorization during development, put stubs