Developed and deployed a Node.js (Express.js) REST API on an AWS EC2 instance running Ubuntu Linux. Configured secure SSH key-based access, managed application processes using PM2 for production reliability, and set up AWS Security Groups for controlled public access. Validated REST endpoints through browser and Postman.
Developed an Android invoice management application to enable small businesses to create, manage, and track invoices digitally. Integrated Firebase for authentication and real-time data storage, and implemented structured invoice generation features to enhance usability and operational efficiency.