Backend Developer (Node.js)
A Node.js backend developer builds APIs and real-time services in JavaScript or TypeScript.
- Write Express routes and middleware
- Work with SQL and document databases
- Handle async work: queues, streams and events
- Keep APIs secure and fast
- An Express API in TypeScript
- Auth, validation and error handling
- A service with a SQL database and a cache
Where it leads: Senior backend, full stack, or platform engineering.
Every skill, at the level the job needs
Updating… · change the level or company to see how it shifts
api-design
core- HTTP URL
- What are APIs
- Content Negotiation
- HTTP: HyperText Transfer Protocol
- HTTP messages
- Understand TCP / IP
sql
core- Relational DB theory
- Relational Data Model
- RDBMS Benefits and Limitations
- SQL and Databases
- NoSQL DBs
- Basics SQL
javascript
core- Declaring variables
- let
- const
- Introduction to JavaScript
- Hoisting
- Naming variables
nodejs
core- What is Node.js?
- Why use Node.js?
- History of Node.js
- Node.js vs Browser
- Running Node.js Code
- Modules
git-github
core- git init
- What is Version Control?
- Why use Version Control?
- git config
- Local vs Global Config
- Git
backend
core- HTTP: HyperText Transfer Protocol
- Domains
- DNS
- Browsers
- Frontend
- JavaScript
datastructures-and-algorithms
core- JavaScript
- Language Syntax
- Control Structures
- Pseudocode
- Pseudocode basics
- Functions
What the levels mean
- L1 · AwareKnows what it is and when it's used
- L2 · BasicsCan use it with guidance
- L3 · WorkingUses it independently on the job
- L4 · StrongHandles hard cases, reviews others
- L5 · ExpertDesigns with it, teaches it
Interviews, by kind of company
Your route adds an interview track that matches the company you choose.
Large IT services firms: aptitude, fundamentals, technical and HR rounds.
Online assessment, coding rounds, a design round.
Hard timed coding rounds, system design, behavioural interviews.
Questions
What does a Backend Developer (Node.js) need to know?
API Design, Backend Developer, JavaScript Roadmap, Node.js Developer, SQL Roadmap at a working level, plus Docker Roadmap, Learn Git and GitHub, MongoDB, TypeScript. The skills section above lists every one with its level.
How long does it take to become a Backend Developer (Node.js)?
About 432 hours of study from scratch. At 10 hours a week that's roughly 44 weeks; anything you already know is skipped after the readiness test.
I already know some of this. Do I start from zero?
No. The optional readiness test finds what you already know and your route skips it.
Does the route change for product companies or senior roles?
Yes. Choose your level and the kind of company above: the skills and target levels adjust, for example deeper data structures and system design for product companies.
Other roles in the Backend track
They share many skills with this one, so progress carries over if you switch.
APIs and services in Python with SQL databases.
Services and APIs with Java and Spring Boot.
Fast, concurrent services in Go.
Services and APIs with C# and ASP.NET Core.