Expense Split App

Year

2025

Tech & Technique

Node.js, Express.js, ReactJS, MongoDB, JWT Auth, Chart.js, Recharts, Tailwind CSS, Vercel

Description

A responsive web application inspired by Splitwise, designed to manage and split expenses among groups or individuals. Built for seamless collaboration and financial transparency.

Key Features:

Group Management: Create, edit, and delete groups for tracking shared expenses
Expense Tracking: Record and categorize expenses with automatic distribution
Balances Overview: View individual balances, amounts owed, and dues
Settlement System: Simplify dues settlement with dynamic balance updates
Activity History: Activity feed for transparency on all expense updates
Visual Insights: Monthly trends, category-wise distribution, and settlement timeline with interactive charts

Technical Highlights:

Implemented JWT-based authentication for secure sessions and role-based access
Designed optimized REST APIs with Express.js for high concurrency
Used Recharts and Chart.js for interactive and real-time data visualization
Optimized backend to handle up to 1000 concurrent users reliably
Ensured full responsiveness across all devices with React and Tailwind
Enhanced security with input validation, encryption, and secure password handling

My Role

Full-Stack Developer
End-to-end development of both frontend and backend:

Backend: Built REST APIs with Node.js & Express, integrated MongoDB for persistence
Frontend: Developed UI with React and Tailwind, ensuring responsiveness
Security: Implemented JWT authentication, encryption, and data validation
Visualization: Integrated Recharts and Chart.js for dynamic analytics
Deployment: Hosted frontend on Vercel and backend on server infrastructure