Expense Tracker

A full-stack expense tracking application built with React, Express, and PostgreSQL. Implements JWT authentication, protected REST APIs, and secure production deployment on a self-managed VPS.

Overview

• User authentication (JWT)
• Protected REST API
• Expense CRUD operations
• Client–server architecture with separated frontend and backend
• PostgreSQL-backed persistent storage

Stack

React · Express · PostgreSQL · JWT · Zustand · Nginx · PM2 · Ubuntu VPS

Deployment

• Self-managed Ubuntu VPS
• Nginx reverse proxy with HTTPS (Let’s Encrypt)
• PostgreSQL (local VPS instance)
• PM2 for Node.js process management

Next Steps

• Data visualisation and expense analytics
• Enhanced dashboard metrics