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Nandini Sharma

@nandinisharma10

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Backend Java developer building REST APIs and an offline UPI payment simulator with Spring Boot.

India

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I built UPI Mesh, an offline UPI payment simulator using a Bluetooth Mesh Network. I implemented secure transaction routing, bridge-node synchronization, and backend APIs for payment processing and transaction management.

I also built a Java food delivery web application using Servlets, JSP, and JDBC with MVC architecture. It includes authentication, menu browsing, and order processing.

Experience

Work history, roles, and key accomplishments

UPI Mesh Developer

Project

Jun 2026 - Jul 2026 (1 month)

Designed and developed an offline UPI payment simulator enabling peer-to-peer transactions through a Bluetooth Mesh Network. Implemented secure transaction routing, bridge-node synchronization, and backend APIs for payment processing and transaction management.

Java Spring Boot REST APIs MySQL Bluetooth LE Mesh Backend Development

Food Delivery Web Application Developer

Project

Jan 2026 - Apr 2026 (3 months)

Built a full-stack application using Java, Servlets, JSP, and JDBC following MVC architecture. Designed dynamic UI and handled requests via Servlets to improve response performance.

Java Servlet JSP JDBC MVC Web Development