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AS

Arjun Sharma

Java Backend Developer · Spring Boot · REST APIs

Ghaziabad, Uttar Pradesh, India

@arjun_sharma1

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About

Java backend developer with hands-on experience building RESTful APIs and end-to-end backend systems using Spring Boot, Spring Security, Spring Data JPA, Hibernate, and MySQL. Strong foundations in OOP, SQL, JDBC, and data structures and algorithms, with 150+ LeetCode problems solved.

Experience

  • Java Full Stack Intern
    Data Alcott Systems
    Sep 2026 – 2026

    Completed a one-week remote Java Full Stack program, building hands-on features with Java, Spring Boot, and MySQL under a task-based curriculum. Translated REST API design, CRUD operations, and database integration concepts from the program directly into independent backend projects.

Education

Skills

3 to 6 months 3 to 6 months A few months of practice with it.
Java API Integration Understanding
<3 months <3 months Just getting started - under three months. This is also what shows when a level has not been set.
SQL Oop JDBC JUnit Array Bcrypt Queues Swagger Mockito Hibernate Spring MVC Linked List Multithreading Spring Security Spring Data Jpa Exception Handling JWT Authentication Collections Framework

Tools / apps / platforms

<3 months <3 months Just getting started - under three months. This is also what shows when a level has not been set.
Git MySQL GitHub Postman VS Code Apache Maven JetBrains IntelliJ IDEA

Projects

  • Student Management System ↗
    Java, OOP, Collections Framework

    Developed a menu-driven console application for managing student records with reusable object-oriented classes, Java Collections, and structured input validation.

  • Employee Management System ↗
    Java, Spring Boot, Spring MVC, Spring Data JPA, Hibernate, MySQL, REST API, Maven, Postman

    Designed and implemented RESTful CRUD APIs for employee records using a layered Controller-Service-Repository-DTO-Entity architecture. Integrated MySQL persistence through Spring Data JPA and Hibernate and built centralized exception handling.

  • E-Commerce Backend API ↗
    Java, Spring Boot, Spring Security, JWT, Spring Data JPA, Hibernate, MySQL, REST APIs, Maven, Postman

    Architected and delivered a full-scale e-commerce backend spanning authentication, product catalog, cart, order processing, checkout, and payments. Secured the platform with JWT-based authentication and role-based authorization, engineered real-time stock validation and inventory deduction, and verified endpoints end-to-end in Postman.

Courses & certifications

  • Software Engineering Certification · HackerRank
  • Java Certification · HackerRank

🏆 Achievements & awards

  • Solved 150+ data structures and algorithms problems on LeetCode and version-controlled multiple Java backend applications on GitHub.

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