Portfolio

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🛒 Shopper – E-commerce Backend API

Designed and developed a secure, scalable backend API for Shopper, an e-commerce platform, using modern web technologies and best practices.

🔐 Key Features:

Authentication & Authorization: Implemented secure user authentication using JSON Web Tokens (JWT) and refresh tokens for session lifecycle management.
Cart Management: Developed APIs to add, update, and remove products in the cart, ensuring a seamless shopping experience.
Checkout System: Generated and displayed final bill including product prices, tax, and discounts.
Redis Integration: Used Redis for storing OTPs and JWT refresh tokens to enhance speed and security.

🧰 Tech Stack:

Languages & Runtime: JavaScript, Node.js
Framework: Express.js
Database: MongoDB
Authentication: JSON Web Token (JWT), Refresh Tokens
Caching: Redis

This project demonstrates the ability to build RESTful APIs with secure authentication and efficient use of caching systems for modern web applications.

🔗 View Source Code

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📝 Blog Application – Backend API for Blogging Platform

Developed a robust backend for a blogging platform that enables users to create, manage, and share blog posts with rich formatting. This project prioritizes secure user access and flexible content management.

🔐 Key Features:

User Authentication: Implemented secure login and signup functionality using JSON Web Tokens (JWT).
Rich Text Editing Support: Integrated backend support for rich text content to allow dynamic and styled blog posts.
Content Management APIs: Designed RESTful APIs to manage blogs — including creating, editing, deleting, and retrieving posts.
Security & Performance: Focused on robust authentication, validation, and efficient MongoDB usage for data integrity.

🧰 Tech Stack:

Languages & Runtime: JavaScript, Node.js
Framework: Express.js
Database: MongoDB
Authentication: JSON Web Token (JWT)
Architecture: RESTful API

This project highlights expertise in backend development with focus on security, RESTful API design, and efficient content management tailored for dynamic blogging platforms.

🔗 View Source Code

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📇 Contact Manager Application – Backend API

Designed and developed a secure and efficient backend API for a Contact Manager platform that enables users to manage personal and professional contacts with ease. Focused on intuitive data handling, user authentication, and seamless interaction.

🔐 Key Features:

User Authentication: Implemented secure login and registration using JSON Web Tokens (JWT) to protect user data and sessions.
Contact Management: Developed RESTful APIs to create, read, update, and delete contact information, supporting easy and organized contact handling.
Secure Data Storage: Utilized MongoDB for reliable and scalable database management.
RESTful API Design: Ensured smooth communication between client and server with well-structured endpoints.

🧰 Tech Stack:

Languages & Runtime: JavaScript, Node.js
Framework: Express.js
Database: MongoDB
Authentication: JSON Web Token (JWT)
Architecture: RESTful API

This project demonstrates backend development proficiency with a focus on secure authentication, efficient data management, and scalable API design.

🔗 View Source Code

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🌦️ Weather App – Real-Time Forecast UI

Developed a fully functional Weather Application using HTML, CSS, and JavaScript that fetches real-time weather data via an external API. Enhanced with smooth animations and responsive design for a modern and interactive user experience.

✨ Key Features:

Real-Time Data: Integrated with OpenWeather API to fetch live weather updates based on city input.
Responsive Design: Optimized layout for various devices using flexible grids and media queries.
JavaScript Interactivity: Displayed live temperature, humidity, wind speed, and weather icons dynamically using DOM manipulation.
CSS Animations: Smooth transitions, animated backgrounds (like moving clouds or raindrops), and hover effects for a dynamic look and feel.

🧰 Tech Stack:

Frontend: HTML5, CSS3, JavaScript (ES6)
API: OpenWeatherMap API
Design: Responsive Layout, Animated UI

This project showcases frontend development skills, including real-time API integration, DOM manipulation, responsive layout techniques, and creative UI design using animations.

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🚖 Taxi Booking Application – Java Console-Based System

Developed a command-line Taxi Booking Application in Java, simulating real-world ride booking functionality using object-oriented programming principles. This interactive console program allows users to register, book rides, and manage trips efficiently.

✨ Key Features:

User Registration & Login: Console-based input to register and authenticate users with role-based functionality.
Ride Booking: Users can book a ride by entering pickup and drop-off details. Ride availability is managed in memory.
Fare Calculation: The system calculates fare based on distance and time using predefined logic.
Driver Assignment: Drivers are automatically assigned based on availability and proximity (simulated).
Ride History: Users can view past ride details with status and fare breakdown.
Modular OOP Design: Clean separation of concerns using classes like `User`, `Driver`, `Ride`, `BookingManager`, etc.

🧰 Tech Stack:

Language: Java
Architecture: OOP, CLI-based interaction
Data Handling: In-memory storage using collections (ArrayList, HashMap)
Tools: JDK, IntelliJ, Terminal

This project showcases core Java programming skills, including class design, inheritance, encapsulation, and exception handling, all within a user-friendly command-line interface.

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🚗 Car Parking Management System – Java Console-Based Application

Designed and developed a fully functional Car Parking Management System using core Java and object-oriented programming principles. This command-line application helps efficiently allocate parking spots, track vehicle entries and exits, and calculate parking charges.

🔑 Key Features:

Slot Management: Dynamically allocates parking slots based on availability using in-memory data structures.
Vehicle Entry/Exit: Records vehicle number, entry/exit time, and slot assigned.
Fee Calculation: Computes charges based on parking duration using configurable rates.
Vehicle Lookup: Allows searching for parked vehicles by registration number.
CLI Interface: Simple and intuitive menu-driven console interface for interaction.
OOP Design: Uses classes such as `ParkingLot`, `Vehicle`, `Ticket`, `SlotManager` to ensure modularity and maintainability.

🧰 Tech Stack:

Language: Java
Architecture: Object-Oriented Programming, CLI Interface
Data Structures: ArrayList, HashMap, Queue
Tools: JDK, IntelliJ, Terminal

This project demonstrates core Java skills, including class design, file handling, exception management, and logic structuring—ideal for real-world use cases in facilities and garage systems.

🔗 View Source Code

Sanjay N

Software Developer.

About Me

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MERN STACK - Basic

MERN STACK - Advance

Latest Project

About Me

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My Internships

MERN STACK - Basic

MERN STACK - Advance

Latest Project

🛒 Shopper – E-commerce Backend API

🔐 Key Features:

🧰 Tech Stack:

📝 Blog Application – Backend API for Blogging Platform

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🧰 Tech Stack:

📇 Contact Manager Application – Backend API

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🧰 Tech Stack:

🌦️ Weather App – Real-Time Forecast UI

✨ Key Features:

🧰 Tech Stack:

🚖 Taxi Booking Application – Java Console-Based System

✨ Key Features:

🧰 Tech Stack:

🚗 Car Parking Management System – Java Console-Based Application

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