Welcome to Node.js for Web APIs

Startup·4 min read·Jan 27, 2026

Hi 👋

If you're reading this, you probably want to build web APIs that feel real, not just a few Express routes that "work on localhost".

Building production-ready APIs requires more than slapping together endpoints. You need structure, validation, parsing, constraints, failure handling, persistence, and code organization that stays clean as the API grows.

That's why I created Node.js for Web APIs — a practical, project-driven course that teaches you how to design and build reliable APIs with Express, persistence with Sequelize, and a simple layered architecture.

About this course

This course is delivered as text-based lessons and hands-on projects.

It follows a clear progression, from understanding HTTP and Express fundamentals, to building real endpoints, to adding middleware-based validation and error handling, to persisting data with a database, to structuring your code with clean layers.

Each lesson focuses on one concept at a time, gives you runnable code snippets, and helps you form the right mental model.

Every few lessons, you'll build a real script that forces the concept to stick—because reading is not learning, practice is.

Each project also comes with a commented, ready-to-study solution walkthrough, so you can compare approaches and pick up reusable patterns.

👉 Feel free to explore the course content using the lessons and projects in the left-hand menu.

What you'll build

Along the way, you'll build multiple APIs that cover the real surface area of backend work: request handling, validation, routing, errors, persistence, and structure.

Here's a shortlist of projects you'll build:

  • Lorem Ipsum API — generate text using query parameters.
  • CSV ↔ JSON Converter API — convert request payloads cleanly.
  • Recipe API — retrieve data using route parameters.
  • URL Shortener API — redirect clients with proper HTTP behavior.
  • Pastebin API — store and retrieve text snippets by id.
  • Polling API — create polls, vote, and retrieve results.
  • Link-in-Bio API — serve a profile with a list of links.

How to use the course effectively

Take the modules in order.

👉 Each lesson builds the runtime instincts you need for the next projects.

For every lesson:

  1. Read the lesson from top to bottom.
  2. Run each example on your machine.
  3. Change the inputs and re-run it.
  4. Break it on purpose.
  5. Fix it and rerun it.

For every project:

  1. Read the requirements from top to bottom.
  2. Study the API contract and example requests.
  3. Implement the simplest working version first.
  4. Handle invalid input and failure cases.
  5. Refactor into clearer structure and predictable errors.

👉 Your goal is not "more endpoints". Your goal is a backend you can trust.

Getting help and updates

This course is updated iteratively based on feedback.

If you find a typo, a broken link, or an unclear instruction: report it.

You can reach out to us via email at: support@learnbackend.dev

And with that being said, happy building!

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