ADVANCED10 Weeks

ADVANCED

NestJS, Clean Architecture, Realtime and CI/CD

What you can do at the end

You can design, secure, monitor and deploy a production-ready system, and explain how it handles growth, failures, security and cost.

How this course ends

A full review of your system with a mentor. You talk through what happens when traffic grows, what happens when a service goes down, how the API is protected, and what you had to fix in the AI's work.

Overview

Advanced prepares you to work like a developer with real production experience. You rebuild the backend with NestJS and clean architecture, secure it, add monitoring, add realtime features, and deploy it with Docker and CI/CD. Because you already built with plain Node.js and Express, you understand what NestJS does for you. In the final project, you plan an original product and use AI tools to build it, and you make and explain every design decision yourself.

Modules and topics covered

1Weeks 1–2: NestJS and Dependency Injection

Dependency injection is how large codebases stay testable. You will meet it in almost every enterprise backend.

Modules, Controllers & Providers
Provider Scoping
DTOs & Validation Pipes
Guards, Interceptors & Middleware
Migrating from Express

2Week 3: SOLID and Clean Architecture

Frameworks change over time. Keeping your business logic separate from the framework makes your code last longer.

Domain, Application & Infrastructure Layers
The Dependency Rule
DDD Tactical Patterns
Framework-Independent Business Rules

3Weeks 4–5: Security, Observability and Data at Scale

Most security problems come from missing basics. Monitoring shows you problems before your users find them.

CORS, Helmet & Rate Limiting
Idempotency Keys & the OWASP Top 10
Structured Logging & Tracing
Redis Caching
Advanced PostgreSQL Indexing
Connection Pooling & Read Replicas

4Weeks 6–8: Realtime, Performance and a Design System

Realtime apps work differently from normal requests and responses. Speed matters too, because slow apps lose users.

WebSocket Namespaces & Rooms
Circuit Breakers
React Performance Profiling
useTransition & Core Web Vitals
A Reusable Design System

5Weeks 9–10: Deployment and Your Final Project

Automated deployment makes every release safe and repeatable. The final project brings together everything you have learned.

End-to-End Testing with Playwright
Docker & CI/CD
Schema Versioning & Backups
Final Project with AI Tools
Final Project Review

Technologies covered

NestJSTypeScriptClean ArchitectureWebSocketsRedisPostgreSQLDockerGitHub ActionsPlaywrightSentryOpenTelemetryTerraform (introduction)Claude CodeCodex