Learn and Understand NodeJS: Under-the-Hood Mastery 2025
What you'll learn
- Dive under-the-hood of how Node.js works to fully understand it
- Structure a Node application in modules (CommonJS and ECMAScript modules)
- Build a Web Server in Node and understand how it really works
- Connect to a SQL (PostgreSQL) or MongoDB database in Node
- Understand how the MERN and PERN stacks work
- Understand and use the Event Emitter
- Understand Buffers, Streams, and Pipes
- Use npm and manage node packages
- Build a web application and API more easily using Express
- Be the coder that explains Node.js to everyone else because you understand it better than anyone else
Requirements
- Basic Javascript knowledge (variables, loops, and basic functions)
- Basic HTML knowledge
- A text editor
Description
Over the past decade this course, newly updated, has become a standard for thousands and thousands of developers learning Node.js, backend web development, and full stack development.
Dive deep into Node.js under-the-hood mechanics and transform from code copier, or asking AI and LLMs to write code you don't understand, to a backend web development architecture expert. Discover why companies pay top salaries to developers who truly understand Node.js internals and asynchronous programming models.
Newly Updated 2025: New comprehensive modules on async/await patterns, ECMAScript modules implementation, and completely rebuilt MERN/PERN stack projects with MongoDB, PostgreSQL, and React!
Why This Course?
Most Node.js courses teach you to follow patterns without explaining the underlying mechanisms. This approach leaves you stranded when debugging complex issues or optimizing performance. By understanding Node.js at its core—how the V8 engine processes JavaScript, how the event loop handles asynchronous operations, and how backend web development principles apply—you'll solve problems other developers can't even identify.
What makes this course unique is its focus on both practical application and theoretical foundation. You'll build real-world Express.js applications while learning how each component functions behind the scenes, giving you the confidence to tackle any backend challenge and excel in full-stack development environments.
What You'll Build
A custom HTTP server from scratch without frameworks
RESTful APIs with Express.js implementing authentication and data validation
File processing application using Streams and Buffers for memory efficiency
Complete MERN stack application with React frontend and MongoDB
Full PERN stack project featuring PostgreSQL database integration
Course Content at a Glance
The curriculum progresses from core concepts to complete applications, ensuring mastery at each level:
Node.js Fundamentals: V8 engine, event loop, and memory management
Module Systems: CommonJS vs ECMAScript modules and dependency management
Asynchronous Patterns: Callbacks, promises, async/await, and event emitters
Web Servers: HTTP module, routing, middleware concepts and Express.js
Database Integration: MongoDB and PostgreSQL connectivity patterns
Full-Stack Development: MERN and PERN architecture implementation
Who Should Enroll
This course is perfect for intermediate JavaScript developers who want to specialize in backend or become true full-stack developers. You should be comfortable with JavaScript fundamentals and ES6 features, but no prior Node.js experience is required—we'll build that expertise from the ground up, focusing on deep understanding rather than simple implementation.
About Me
With over 25 years as a full-stack developer and 10 years of teaching Node.js on Udemy, I've helped hundreds of thousands of students master backend development concepts. Students in my courses have not just gotten jobs, but become senior developers, started companies, and even become teachers themselves.
Enroll now to stop copying Node.js code and start truly understanding how backend web development works at its core!
Who this course is for:
- Those looking to build a career as a NodeJS developer
- Those desiring to become full-stack developers
- Those who don't have server technology experience but wish to gain this skill
- Those who want to only have to write both client and server code in one language: Javascript
- Those who want to grasp Express, MERN, and PERN stacks
Featured review
Instructor
- 4.7 Instructor Rating
- 109,054 Reviews
- 362,877 Students
- 11 Courses
Born and raised in Cleveland Ohio, now married and living in upstate New York, Tony is primarily focused these days on trying to be a good husband. While inexperienced at that, he's quite experienced in all things web.
Tony has been programming since he was 12 years old, and got into web sites and web application development at 16. After graduating with a Computer Science degree from Case Western Reserve University, Tony continued with that interest as a software application developer and architect, database designer, and user interface designer.
His 25 years of experience has ranged across technologies such as modern semantic HTML, CSS, JavaScript, React, Angular, Vue, Node.js, SQL as well as user experience design, usability testing and more.
He believes strongly that deeply understanding any topic allows you to properly learn it and, even more importantly in a real-world environment, quickly overcome problems.
He also has a deep interest in human nature and behavior, and how that impacts human-computer interaction. This interest translated into extending his career into user experience design and usability research.
Another link in the chain is his 25 years of experience in public speaking and teaching, both in front of large groups and as a one-on-one private instructor.
Putting all these pieces together, he has spent his career listening to a client need, designing a database and software to meet that need, building it, testing it, teaching others how to use it, then improving user experience by watching people actually use it and adjusting accordingly.
Tony loves teaching every aspect of what he does, and even more loves teaching in a way that imparts understanding, as opposed to just examples intended to be parroted. He loves that moment when a student 'gets it', and that's what he wants for you when you take one of his courses.
He has found that those that learn purely by example, and not by understanding, end up much more limited than they need to be.
"Examples need to be built on top of context, and once you have context, you can not only copy the examples you find, but adjust and improve upon them."
He firmly believes that everyone has the ability to develop software, if they are just taught properly. Including you.
"It is my pleasure and privilege to teach you. I hope you'll come away knowing something you didn't before, understanding at a level deeper than before, and feeling positive that you can accomplish what you've set out to accomplish. Thank you!" - Tony Alicea
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