beginner

Introduction to Backend Development with Next.js

Back-end Engineering

5 courses

69 practices

5 hours

Learn backend development with Next.js, from basic API routes to CRUD operations, validation, middleware, and modular design. Build a Task Manager API and refactor it with databases and production-ready patterns for real-world full-stack apps.

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Verified skills you'll gain

INTERMEDIATE

Server-Side Programming

INTERMEDIATE

API Integration, Design, & Development

Tools you'll use

Nextjs

NodeJS

TypeScript

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Course 2

Handling Data with POST, PUT, PATCH and DELETE

4 lessons

16 practices

Expand your API's capabilities by learning to create, update, and delete data. You'll implement handlers for POST, PUT, PATCH and DELETE requests, work with request bodies, and build dynamic routes to manage individual resources.

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Course 3

Building Robust and Modular APIs

4 lessons

14 practices

Take your API to the next level by making it more robust and maintainable. You'll learn to validate incoming data, create centralized error responses and success messages, and use middleware to log requests in a structured and insightful way. You'll also refactor core logic into reusable service modules—key skills for building professional-grade applications.

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Course 4

Project: Building a Task Manager API

4 lessons

16 practices

Build a fully functional backend API for managing tasks, applying robust architecture patterns such as centralized response utilities, a dedicated service layer, and secured access via API key middleware. The project culminates in connecting the backend with a user interface to observe real-time API behavior.

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Course 5

Refactoring for Production Readiness

3 lessons

11 practices

This course strengthens learners' backend development skills by introducing production-grade practices. It focuses on replacing in-memory logic with persistent storage, enforcing professional validation standards, and abstracting data access into repositories. By simulating real-world persistence and layering, learners prepare for transition into full-stack or database-backed applications.

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From our community

Hear what our customers have to say about CodeSignal Learn

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.

Faith Yim

Software Engineer

+14

It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.

Alex Bush

Full Stack Engineer

I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.

Abbey Helterbran

Tech consultant

I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.

Jonathan Miller

Senior Machine Learning Engineer

+12

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11