Expense Tracker

Developed and deployed a full-stack full-CRUD expense tracking application built with React, Node.js, and PostgreSQL. Architected on AWS using an automated microservice pattern: hosted the optimized frontend statically via Amazon S3, deployed the API gateway on an Amazon EC2 VPS instance managed by Elastic Beanstalk, and linked data persistence to an encrypted Amazon RDS database instance. Implemented robust CORS security rules, custom floating toast notifications, and secure parameterized queries to prevent SQL injection threats.