Backend / Authentication / Security

Node.js Authentication System

A complete Express and MongoDB authentication system with sign up, sign in, password reset, Google OAuth, email flow, and reCAPTCHA.

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Year: 2024
Type: Backend feature project
Period: 2025
Status: Published
Role: Developer implementing authentication features and security-related validation.
Demo: Interactive
Architecture: Express app with models, controllers, routes, views, public assets, and environment-based configuration.
Source: GitHub: Kettailor/NodeJS-Authentication-System

Project preview

This project focuses on practical authentication features: account registration, login/logout, encrypted passwords, reset password, forgot password email, Google OAuth, password validation, and bot protection with reCAPTCHA.

OAuth

Social login

Google login/sign-up flow.

Account recovery

Forgot/reset password email workflow.

reCAPTCHA

Bot protection

Protection on sign-up and login pages.

Security basics

Shows practical secure-account flows: encrypted passwords, validation, reset, OAuth, and bot protection.

Backend structure

Uses models, controllers, routes, views, and environment variables.

Live access

Includes a deployed Render link for recruiters to try the auth flow.

Live interaction

REVIEW IT IN MOTION.

The project has a connected live surface, so reviewers can move from the case study into the product experience.

https://nodejs-authentication-system-l2pu.onrender.com/user/signin

Node.js Authentication System live demo preview

Live demo available

Open the demo directly for the full experience.

This project is deployed and ready to review. The live site is opened in a new browser tab to avoid iframe blocking and keep the preview stable.

Open live demo

Challenge

Build authentication beyond a simple login form, including account recovery and third-party sign-in.

Solution

Implement Express/MongoDB authentication with structured routes, password handling, Google OAuth, email reset, and reCAPTCHA.

Outcome

A focused backend project that demonstrates practical authentication and security-aware web development.

Recruiter view

WHAT TO NOTICE IN THIS PROJECT.

Relevant for roles that need backend auth, account systems, and security-minded validation.

Good interview topic: password reset, OAuth callback, environment variables, and reCAPTCHA integration.

Contribution

ROLE AND STACK.

Responsibilities

Authentication flow
Backend routes
Security validation
MongoDB integration

Technology

Node.jsExpressMongoDBEJSGoogle OAuthEmailreCAPTCHASession/Auth flow