Hi, I'm Narin Rouen

A Junior Backend Developer

Building secure and scalable RESTful APIs with Spring Boot, including JWT authentication, session management, and Stripe payment integration.

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Narin Rouen

About Me

Narin Rouen

Junior Backend Developer skilled in Java, Spring Boot, and RESTful APIs. I've built production-grade systems including a Banking API with JWT authentication, an E-commerce platform with role-based access control, and a School Management System. Focused on secure, scalable backend architecture and clean code practices.

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My Projects

School Management System

Full-Stack School Management System

Spring Boot MVC, Java, MySQL

A comprehensive system for managing school operations, students, and faculty.

GitHub Repository
Digital Bank Management API

Digital Bank Management API

Java 21, Spring Boot 4, MySQL, JWT, Spring Security

Production-ready RESTful Banking Backend with secure authentication, role-based authorization, JWT tokens, and real-time financial transactions (deposits, withdrawals, transfers).

GitHub Repository
Clothes E-Commerce Platform

Clothes E-Commerce Platform

Java 21, Spring Boot 4.0.3, MySQL, JWT, Spring Security

Production-ready RESTful e-commerce backend with secure JWT authentication, role-based access control, product management, and comprehensive API endpoints for modern e-commerce operations.

GitHub Repository

My Skills

Technical Skills

Java Programming Language
Spring Boot Framework
Spring Security & Spring Data JPA
RESTful API Development

Soft Skills

  • Team Collaboration
  • Clear Communication
  • Fast Learner
  • Problem Solving
  • Adaptability
  • Time Management

Languages

Khmer (Native), English (B2), Spanish (A1)

Education

2025 - 2026

International Semester in Telecommunication Engineering

University of Valladolid, Spain

Erasmus+ KA171 Exchange Program

2022 - 2025

Bachelor Degree in Computer Science

University of Management and Economics, Cambodia

Grade: B+ | CGPA: 3.56 | Graduation: 2025

2022 - 2025

Adult English Program

USA International School, Cambodia

Grade: A | Score: 92.7 | Level: 6B Intermediate

Certificates

Golden Medal for the First-Place Student

UME

December 2024

Java Course

Udemy

Present

Meta Back-End Developer

Meta | Coursera

May 2025

National Youth Diplomacy Forum

Mekong Youth Ambassador Council

October 2024

Spring Boot Microservices Course

Udemy

Present

Google IT Support

Google | Coursera

March 2025

Recommendations

"Narin is quick to learn new technologies and applies them effectively in both academic and practical projects. I am confident he will be a valuable asset to any team or organization."

Pro. Norakseiha Thin
lecturer in IT Department at UME, MsIT

"Narin consistently showed strong technical skills and dedication in group projects, often taking initiative and delivering quality work."

Pro. Ravy Hun
Lecturer in IT Department at UME

"Narin takes tremendous responsibility for his work and learns a lot in the classroom. He is well-researched and has innovative ideas. Please continue his excellent work."

Pro. DUK Otdom
Lecturer in IT Department at UME

Get In Touch

Narin Rouen

Junior Backend Developer

rouennarin1235@gmail.com

Valladolid City, Spain