Free Course — No signup required

Build Node APIs with Express.js
in 5 Days

Express is the most popular Node.js framework. Build REST APIs, connect to MongoDB, and add JWT authentication — all in JavaScript.

5 lessons
Self-paced
~60 min/day
Free forever
Start Day 1 — Free → See what's covered
What you'll learn

Express.js in 5 Days

Express is the most popular Node.js framework. Build REST APIs, connect to MongoDB, and add JWT authentication — all in JavaScript.

  • Define routes and handle requests/responses
  • Write and chain middleware functions
  • Connect to MongoDB with Mongoose
  • Add JWT authentication
  • Deploy to Railway or Render
5
practical lessons
Node
JavaScript everywhere
$0
cost to take this course
REST
API-first design
5-Day Curriculum

Every lesson ships working code.
No theory without practice.

01
Routes and Middleware
Set up an Express server, define routes for all HTTP methods, write middleware, and understand the request/response cycle.
express()app.usemiddlewareroute params
→
02
MongoDB and Mongoose
Connect to MongoDB Atlas, define schemas and models, perform CRUD operations, and understand Mongoose's query API.
mongooseSchemaModelCRUD
→
03
Authentication with JWT
Register and login users, hash passwords with bcrypt, issue JWTs, and protect routes with an auth middleware.
bcryptJWTauth middlewarecookie-parser
→
04
Error Handling and Validation
Centralized error handling middleware, input validation with Zod, custom error classes, and proper HTTP status codes.
error middlewareZodasync errorsstatus codes
→
05
Deploy to Production
Environment variables, CORS config, rate limiting, and deploying to Railway with a MongoDB Atlas connection.
dotenvCORSrate-limitRailway
→
Get notified

Get the full course in your inbox

Optional. Each lesson delivered daily plus tips on ecosystem updates.

Free forever. Unsubscribe anytime. No spam.

You're in. Day 1 is in your inbox.

Your instructor
B
Bo Peng
Founder, Precision AI Academy

Kaggle Top 200 data scientist. Trained 400+ professionals across universities and federal agencies. Built production systems used by thousands. This course skips toy examples and gives you patterns that work in real projects.

Want to go deeper in 2 days?

Our in-person AI bootcamp covers modern development, agentic systems, and production deployment. Five cities. $1,490.

Reserve Your Seat →