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karan-hub/README.md

Hi there, I'm Karan Chavan πŸ‘‹

Full-Stack Java Developer | Spring Boot Specialist | Mobile Developer

πŸŽ“ B.E. Computer Engineering (CGPA: 8.87/10) | πŸ“ Pune, India

LinkedIn Portfolio Email

πŸ‘¨β€πŸ’» About Me

I'm a passionate Full-Stack Java Developer specializing in building scalable backend systems and production-ready mobile applications. With hands-on experience in Spring Boot microservices, React Native, and modern web technologies, I focus on delivering clean, maintainable, and high-performance solutions.

  • πŸ”­ Currently working on production features at Medifinder Healthcare
  • 🌱 Exploring Microservices Architecture, Cloud Technologies, and System Design
  • 🎯 Passionate about GenAI, Spring AI, and Advanced Spring Boot patterns
  • πŸ’‘ Built multiple client-facing projects with real-world impact
  • πŸ† 2Γ— Hackathon Winner | 160+ DSA problems solved

Tech Stack

Languages

Java JavaScript TypeScript Python

Backend & Frameworks

Spring Boot Spring Security Hibernate REST API Microservices

Frontend & Mobile

React React Native HTML5 CSS3 TailwindCSS Material UI

Databases

MySQL PostgreSQL MongoDB Redis

Tools & DevOps

Git GitHub Postman Linux VS Code

πŸ’Ό Professional Experience

πŸ₯ React Native Developer Intern | Medifinder Healthcare

Building Production Healthcare Solutions

  • Developed and optimized mobile features for live healthcare application
  • Integrated RESTful APIs with robust error handling and state management
  • Enhanced app performance and user experience through code optimization
  • Collaborated with cross-functional teams in Agile environment

β˜• Java Backend Intern | Suma Soft Pvt Ltd

Backend Development & System Design

  • Designed and developed Java backend modules using OOP principles
  • Implemented clean code practices and conducted thorough debugging
  • Contributed to scalable enterprise application development

🎨 Frontend Developer Intern | NPIT Solutions

Responsive Web Development

  • Built responsive and interactive user interfaces using HTML, CSS, JavaScript
  • Collaborated with backend teams for seamless API integration
  • Ensured cross-browser compatibility and mobile responsiveness

πŸš€ Featured Projects

Spring Boot + React Native | Full-Stack Application

  • Built complete milk delivery ecosystem with subscription management
  • Implemented secure JWT authentication and role-based access control
  • Integrated payment gateway and real-time order tracking
  • Designed scalable REST APIs with proper error handling
  • Tech: Spring Boot, React Native, MySQL, JWT, Payment Integration

Enterprise-Grade Ticketing System

  • Developed secure movie ticket booking system with seat management
  • Implemented JWT-based authentication and authorization
  • Created efficient database schema with proper indexing
  • Built RESTful APIs following industry best practices
  • Tech: Spring Boot, MySQL, Spring Security, JPA/Hibernate

GenAI-Powered Medical Application

  • Developed AI-powered symptom analysis system
  • Integrated Spring AI for intelligent health recommendations
  • Designed microservices-ready architecture for scalability
  • Built secure REST backend with proper validation
  • Tech: Spring Boot, Spring AI, GenAI, Microservices Architecture

πŸ“± More Projects

Explore my other projects including E-commerce platforms, Task Management Systems, and API integrations β†’ View All Repositories

πŸ† Achievements & Certifications

  • πŸ₯ˆ 2nd Place - MSBTE District-Level Hackathon
  • πŸ† 2Γ— Winner - College-Level Hackathons
  • πŸ’» 160+ Problems Solved - Data Structures & Algorithms
  • πŸ“œ 10+ Technical Certifications in Java, Spring Boot, and Web Development
  • ⭐ 8.87 CGPA - Computer Engineering

πŸ’‘ Current Focus

Production Development

Building healthcare features at Medifinder

Continuous Learning

Microservices, Cloud (AWS/Azure), System Design

Exploring

GenAI, Spring AI, Kafka, Docker

πŸ“« Let's Connect!

Feel free to reach out for collaborations, opportunities, or just a friendly tech chat!

LinkedIn Portfolio GitHub Email

Profile Views

⭐ If you find my work interesting, consider starring my repositories!

Made with ❀️ by Karan Chavan

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  1. Villager-Milk-delivery-App-Backend Villager-Milk-delivery-App-Backend Public

    Backend system for a milk delivery application built with Java and Spring Boot, supporting subscriptions, orders, authentication, and role-based access using REST APIs, JWT security, and MySQL.

    Java 2

  2. vilgo-milk-delivery-app-React-native vilgo-milk-delivery-app-React-native Public

    React Native mobile application for a milk delivery platform, supporting subscriptions, orders, and delivery workflows. Built with React Native and Expo, integrating secure REST APIs with a Spring …

    TypeScript 1

  3. Book-my-show-Backend Book-my-show-Backend Public

    A Spring Boot–based movie ticket booking system inspired by BookMyShow. It supports browsing movies, managing theaters and showtimes, seat selection, secure payments, and booking history. Designed …

    Java 1

  4. Fabric-Fold-Cloth-Store Fabric-Fold-Cloth-Store Public

    Frontend-focused freelance project for a clothing store, built using React.js with an admin dashboard and integrated APIs. Designed to deliver a responsive, user-friendly shopping experience and ma…

    JavaScript 3

  5. Java-DSA Java-DSA Public

    A structured Java Data Structures and Algorithms repository containing solved problems with multiple approaches, optimized solutions, and clear explanations. Focused on problem-solving, time–space …

    Java 3

  6. Native-instagram Native-instagram Public

    A feature-rich Instagram-style mobile application built with React Native and Firebase (BaaS), supporting secure user authentication, real-time feeds, and cloud-based image uploads. Designed with E…

    TypeScript 3