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dvijaykumarr/README.md

Hi there, I'm Vijay 👋

Java Backend Developer | Spring Boot · REST APIs · JWT Security

🚀 About Me

  • 🎓 B.Tech in Computer Science & Engineering @ Lovely Professional University
  • 💻 I build secure, scalable backend systems using Java & Spring Boot
  • 🔧 Currently sharpening skills in system design and clean architecture
  • 🌱 Actively looking for Java Developer opportunities
  • 📫 Reach me at dvk200507@gmail.com

🛠️ Tech Stack

Languages

Java JavaScript

Backend

Spring Boot Spring Security Hibernate REST API

Frontend

React Tailwind CSS HTML5

Tools & Platforms

Git GitHub MySQL Maven Postman IntelliJ IDEA

📌 Featured Projects

🏬 Multi-Tenant SaaS POS System

Enterprise-grade, multi-branch POS backend with 59 REST APIs across 11 modules.

  • JWT authentication & role-based access (Admin, Manager, Cashier)
  • Billing, refunds, inventory & shift-based reporting
  • Layered architecture: Controller → Service → Repository

Java Spring Boot Spring Security JPA/Hibernate

📚 Enterprise Library Management System

Library backend with 51+ REST APIs and hierarchical genre support.

  • Self-referencing parent-child genre hierarchy
  • Razorpay payment gateway integration
  • DTO + Mapper pattern, global exception handling

Java Spring Boot Razorpay JPA/Hibernate

🏆 Certifications

  • 🎖️ Advanced Java Skill Up — GeeksforGeeks
  • 🎖️ Frontend Developer (React) — HackerRank
  • 🎖️ Java with OOPs — CipherSchools

Open to Java Developer roles — let's connect!

Pinned Loading

  1. multi-tenant-pos-system multi-tenant-pos-system Public

    Enterprise-grade multi-tenant SaaS POS backend with 59 REST APIs across 11 modules, JWT authentication, RBAC, inventory management, refund processing, and shift-based reporting.

    Java

  2. enterprise-library-management enterprise-library-management Public

    Enterprise-grade Library Management System built with Java Spring Boot, featuring JWT + OAuth2 auth, borrowing workflows, fine management, reservations, and Razorpay payments

    Java

  3. shared-expenses-app shared-expenses-app Public

    Spring Boot Expense Splitter backend with intelligent CSV import, anomaly detection, and balance management.

    Java

  4. cloudshare-frontend cloudshare-frontend Public

    Frontend for CloudShare Web Application built with React, Vite, Tailwind CSS, and Axios.

    JavaScript

  5. cloudshare-backend-api cloudshare-backend-api Public

    Secure REST API for CloudShare file sharing platform built with Spring Boot, MongoDB, and Clerk JWT authentication.

    Java

  6. JavaDiceGame JavaDiceGame Public

    A java console-based Dice Game using OOP

    Java