MCA Graduate | Java Backend Developer | Spring Boot | REST APIs | Building Scalable Backend Applications

Aman Gupta  • Peerlist

A full-stack E-Learning platform with role-based access control and Razorpay payment integration, built using Spring Boot, Spring Data JPA, and MySQL. 👨‍💼 Admin Module: → Add & manage subject-wise questions and answers → Create and assign quizzes subject-wise → View complete user records — who attempted which quiz, when, and their scores 👨‍🎓 User Module: → Self-registration with automated email containing login credentials → 3 Courses available (1 Free + 2 Paid) → Razorpay Payment Gateway for course purchase → Quiz access unlocks automatically after payment → Subject-wise quiz attempt (one at a time) → View current & past quiz results with scores 🔧 Tech Stack: Spring Boot | Spring Data JPA | MySQL | JSP/Servlets HTML/CSS | JavaMail API | Razorpay Payment Gateway 💡 Key Highlights: → Role-based system — Admin & User access control → Razorpay API integration for real payments → Automated email on registration via JavaMail → Payment-gated content unlock system → Real-time quiz evaluation & result history

E-Learning Management System

Built a production-ready personal expense management REST API using Spring Boot with JWT-based stateless authentication and role-based data isolation. Key Features: - Secure REST APIs with JWT Authentication & Spring Security - Complete Transaction & Category CRUD with pagination and filtering - Monthly income/expense summary and category-wise analytics - Swagger/OpenAPI documentation for interactive API testing - BCrypt password hashing and global exception handling - Deployed on Railway with MySQL database Tech Stack: Java, Spring Boot, Spring Security, JWT, Hibernate, JPA, MySQL, Swagger, Lombok, Maven

Expense Manager REST API

• Built a secure web-based voting system using Java, JSP, Servlets, and MySQL. • Implemented login authentication, session management, auto logout, and vote counting. • Worked on CRUD operations, database design, and backend logic. • Designed user-friendly JSP pages and implemented servlet-based controllers.

Online Voting System

• Created login, signup, and role-based access modules using JSP/Servlet + JDBC. • Built database tables, queries, and authentication logic.