Backend Engineering with NestJS

From JavaScript Fundamentals to Deployed API.

Course Overview

This is a rigorous 6-month engineering program designed to forge job-ready developers. We build from the ground up, starting with core JavaScript and the professional's toolkit (Linux & Git). You will then master building, testing, and deploying robust backend systems using Node.js, TypeScript, and the powerful NestJS framework, culminating in an intensive interview preparation module.

What You'll Learn

  • ✓ A complete mastery of the JavaScript language, from fundamentals to advanced concepts.
  • ✓ Mastery of the Linux Command Line and professional Git workflows.
  • ✓ Building scalable and maintainable applications with the NestJS framework.
  • ✓ Designing and managing SQL (PostgreSQL) databases with an ORM.
  • ✓ Implementing a Test-Driven Development (TDD) culture for robust applications.
  • ✓ Deep, practical understanding of Data Structures & Algorithms for interview mastery.

Week-by-Week Curriculum

Weeks 1-2: The Professional Engineer's Toolkit

  • Mastering the Linux Terminal & Essential Commands
  • Professional Version Control with Git & GitHub
  • In-depth: The HTTP Protocol and the Client-Server Model

Weeks 3-6: JavaScript & TypeScript, Zero to Hero

  • JavaScript Fundamentals (Variables, Control Flow, Functions, Objects, Arrays)
  • Asynchronous JavaScript (Promises, Async/Await)
  • Introduction to TypeScript for Type-Safe Code

Weeks 7-8: Node.js & Express Fundamentals

  • The Node.js Runtime and Event Loop
  • Building a foundational server with Express.js
  • Understanding Middleware, Routing, and Error Handling

Weeks 9-12: Enterprise Development with NestJS

  • The NestJS Philosophy: Modules, Controllers, and Providers
  • Mastering Dependency Injection and Building a Modular Application
  • Configuration, Validation, and Logging

Weeks 13-15: Data & Persistence with NestJS

  • Fundamentals of SQL and Database Design with PostgreSQL
  • Using the TypeORM module for database interaction
  • Implementing CRUD operations and complex relationships

Weeks 16-18: TDD & Application Security

  • The Test-Driven Development (TDD) Mindset
  • Unit and Integration Testing in NestJS with Jest
  • Implementing Secure User Authentication with JWT and Passport.js

Weeks 19-21: Data Structures & Algorithms for Interviews

  • Complexity Analysis: Big O Notation in Practice
  • Core Structures: Arrays, Linked Lists, Stacks, Queues, Hash Tables
  • Solving classic algorithmic problems (LeetCode style).

Weeks 22-24: Capstone Project & Career Prep

  • Building the FinTech Wallet API from scratch
  • Containerizing your application with Docker
  • Final Project Presentations & Technical Interview Preparation