Build a REST API in Node.js (Beginner-Friendly, Auth + Database)
Updated on February 07, 2026 14 minutes read
Frequently Asked Questions
How long does it take to build a REST API in Node.js as a beginner?
A basic CRUD API can be built in a weekend. A portfolio-ready API with auth, validation, docs, tests, and deployment usually takes 2–4 weeks part-time.
Should I use Express or something like NestJS?
Express is ideal for learning fundamentals with minimal complexity. NestJS is great later if you want stronger structure for large apps, but Express is a strong starting point.
Is JWT authentication enough for a junior portfolio project?
Yes. JWT + bcrypt + protected routes + ownership checks is a solid baseline. You can mention future improvements like refresh tokens or OAuth as “next steps.”
PostgreSQL or MongoDB, what should I choose?
Both work, but PostgreSQL is excellent for learning relationships and structured data modeling. MongoDB can be simpler if you prefer flexible documents, but either choice is valid.
What should I include in my portfolio besides the code?
Include a clear README, a deployed link, endpoint examples, and a short “What I learned” section. Tests and API documentation make your project easier to trust.