Gunalan M profile photo 1 on Tal

Gunalan M

Java Backend Developer · Spring Boot · REST APIs · MySQL | Seeking Opportunities Software Developer · Java | Spring Boot | Hibernate | Building Scalable Backend Systems

Chidambaram

Education

Bachelor, CSE

Mrk Institute of technology

20214 yrs2025
Nirmala Matriculation Higher Secondary School

High School Diploma, Mathematics and Computer Science

Nirmala Matriculation Higher Secondary School

20192 yrs2021

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Headline

Java Backend Developer · Spring Boot · REST APIs · MySQL | Seeking Opportunities Software Developer · Java | Spring Boot | Hibernate | Building Scalable Backend Systems

About

I'm a Java backend developer with hands-on experience building secure, scalable RESTful APIs using Spring Boot, Hibernate/JPA, and MySQL — sharpened through a 6-month internship developing a full-scale Digital Payment Management system. During my internship at QSPIDERS, I designed and built REST APIs for transaction processing, integrated Spring Data JPA for data persistence, and connected a React.js frontend for real-time payment visibility — all tested rigorously with Postman. I also built a full-stack Handwritten Document Digitizer using Python, Flask, MongoDB, OCR APIs, and React, which gave me end-to-end product experience across backend, AI integrations, and frontend. I'm passionate about clean architecture, solving practical problems with code, and continuously growing. Currently targeting backend or full-stack developer roles where I can contribute on day one — and keep learning fast. Software Developer Intern — Digital Payment Management QSPIDERS · Oct 2025 – Mar 2026 · Chennai, India Engineered a full-stack digital payment system using Java, Spring Boot, and Spring Data JPA — enabling secure transaction processing with an 8-table MySQL database schema Designed and implemented 12+ REST API endpoints for payment initiation, record retrieval, and status updates; validated all endpoints via Postman before release Integrated a React.js frontend allowing users to view live payment history and initiate transactions — reducing backend-to-UI integration time by coordinating data contracts upfront Applied MVC architecture and Hibernate ORM best practices, reducing raw SQL dependency and improving data consistency across services Full-Stack Developer (Project) — Digitize & Translate Documents Personal Project · May 2025 Built an end-to-end document intelligence platform using Python (Flask), React.js, MongoDB, and GenAI/OCR APIs — converting handwritten documents into editable, translated digital text Developed REST API layer in Flask to handle document uploads, OCR processing, and AI-based translation, integrated with a React frontend for real-time previews Implemented CRUD operations via MongoDB for document storage, retrieval, and management — demonstrating cross-stack architecture (frontend + backend + database + AI integration)

Location

Chidambaram

Education

Bachelor, CSE, Mrk Institute of technology

High School Diploma, Mathematics and Computer Science, Nirmala Matriculation Higher Secondary School

Gunalan M - Java Backend Developer · Spring Boot · REST APIs · MySQL | Seeking Opportunities Software Developer · Java | Spring Boot | Hibernate | Building Scalable Backend Systems in Chidambaram | Tal