Available for work

Hello, I'm

Chamreun Odompanha

I'm a Full Stack Developer. I build responsive web applications, secure backend services, and data-driven solutions with Java, Spring Boot, React, Next.js, and PostgreSQL.

2+
Years building for the web
10+
Projects shipped
12+
Tools & technologies
Chamreun Odompanha

01about

A bit about me

I am a full-stack developer with 2+ years of hands-on experience building and maintaining web applications, RESTful APIs, and database-driven solutions using Java, Spring Boot, Next.js, TypeScript, and modern frontend tooling.

I hold a Bachelor Degree in Computer Science from the Royal University of Phnom Penh and completed the Software Expert Training Program at the Korea Software HRD Center. My work focuses on clean architecture, scalable backend design, and building user-friendly interfaces that align with business goals.

At KOSIGN, I design and develop full-stack features for B2B Fin-Tech and e-Finance systems, integrating backend services with PostgreSQL, JWT authentication, and third-party APIs while delivering responsive front-end experiences in React and Next.js. I am confident working in English and Khmer, and I enjoy solving technical problems with strong communication and collaboration.

02skills

What I work with

Frontend

  • HTML5 & CSS3
  • JavaScript
  • TypeScript
  • React.js
  • Next.js
  • Tailwind CSS
  • jQuery

Backend

  • Java 17-21
  • Spring Boot
  • Spring Security
  • RBAC
  • JWT & OAuth2
  • Spring Data JPA
  • Hibernate

Database & API Design

  • SQL
  • MySQL
  • PostgreSQL
  • ERD Design
  • RESTful & SOAP API Design

Microservices

  • Eureka
  • API Gateway
  • Spring Cloud OpenFeign
  • Load Balancer

DevOps & Tools

  • Git
  • Docker
  • Postman
  • Swagger / OpenAPI
  • AWS
  • Jira
  • Confluence

03experience

Where I've worked

  • Web Developer / Full Stack Developer

    KOSIGN (Cambodia) Investment Co., Ltd.

    The company specializes in B2B Fin-Tech, e-Finance, and Global IT Outsourcing.

    • Developed backend applications and RESTful APIs with Spring Boot and Spring Data JPA for efficient data access, JWT authentication, and role-based authorization integrated with PostgreSQL.
    • Built and maintained microservice-based backend systems using Spring Cloud, Eureka, API Gateway, and OpenFeign for service discovery, routing, and inter-service communication.
    • Collaborated with cross-functional teams to design solutions, connect frontend and backend services, and deliver business-ready features for internal and external users.
    • Built responsive and user-friendly interfaces using Next.js, TypeScript, HTML5, CSS3, and Tailwind CSS to support modern web experiences.
    • Containerized services with Docker and used Git and GitLab for source control, versioning, and release coordination.
    • Tested API endpoints using Postman and ensured application quality through consistent debugging, code review, and iterative improvements.
    Aug 2024 — PresentKOSIGN (Cambodia) Investment Co., Ltd.

Education

  • Bachelor Degree of Computer Science

    Royal University of Phnom Penh

    2021 — 2024
    Bachelor Degree of Computer Science
  • Software Expert Training Program

    Korea Software HRD Center

    2024 — 2025
    Top Team Award — 12th Basic Training Course, Korea Software HRD Center (2024)
    Top Team Award — 12th Basic Training Course, Korea Software HRD Center (2024)

Featured Projects

A collection of projects showcasing my full-stack development skills and problem-solving approach

E-Commerce Platform

Full-stack e-commerce solution with Next.js frontend and Spring Boot backend. Features JWT authentication, product management, shopping cart, and admin dashboard.

Next.jsSpring BootPostgreSQLDockerJWTRedis

Library Management System

Modern library management application with React frontend and Spring Boot backend. Includes CRUD operations, advanced pagination, and responsive design.

ReactTailwind CSSSpring BootMySQLREST API

Digital Wallet API

Comprehensive financial API supporting SOAP and REST protocols. Implements complex transaction validations, security layers, and microservices architecture.

JavaSpring BootSOAPDockerMicroservicesOAuth2

Coc Docs Platform (CDP)

A personal side project — one workspace for every product's documentation. Tracks what's written, what's missing, and who's behind it across every product a team ships, with per-product knowledge bases, content-status tracking, and team role management.

Next.jsSpring BootPostgreSQLTypeScriptTailwind CSS
✦ Now tracking documentation coverage

One workspace for every product's documentation.

Coc Docs Platform is a side project I'm building — it tracks what's written, what's missing, and who's behind it, across every product a team ships. Each product gets its own knowledge base with per-item content status, quick editing, and team role management.

Coc Docs Platform (CDP)

04contact

Let's build something

Have a project in mind, a role to fill, or just want to say hello? Send a note and I'll reply within a day or two.

oudompanha456@gmail.com