Hello, I'm Mengtong

Software Engineer

5+ years of experience in designing, developing, and deploying scalable and secure web applications on GCP and AWS.

About Me

Learn more about my journey, approach to problem-solving, and professional philosophy

I am a passionate Full-Stack Software Engineer with a proven track record of delivering high-quality, scalable web applications. My journey in software development has taken me across multiple countries and diverse technical challenges, from building AI-powered educational platforms to developing secure banking systems.

My approach to problem-solving combines technical expertise with a deep understanding of business requirements. I believe in writing clean, maintainable code and following best practices in software architecture. Whether working with microservices, implementing CI/CD pipelines, or designing user interfaces, I focus on creating solutions that are both robust and user-friendly.

Having worked in international teams across Japan, Cambodia, and Singapore, I bring a global perspective to software development. I'm particularly passionate about cloud technologies, system architecture, and creating seamless user experiences that make a real impact on businesses and their users.

Experience

5+ years of professional software development

Global Reach

Worked across Japan, Cambodia, and Singapore

Specialization

Full-stack development with cloud technologies

Architecture

Microservices and scalable system design

Professional Values

Clean Code

Writing maintainable, well-documented, and testable code

Scalability

Building systems that grow with business needs

Collaboration

Working effectively in diverse, international teams

Innovation

Continuously learning and applying new technologies

Currently Based In

📍 Tokyo, Japan

Working on-site at Quad, Inc., developing modern web applications for the restaurant industry

My Projects

A showcase of my technical projects, ranging from enterprise-level systems to innovative AI-powered applications.

Creator

2025

Featured

Next.js Authorization Server

A modern, production-ready OAuth2 authorization server built with Next.js 15, React 19, TypeScript, Prisma, and PostgreSQL, implementing clean architecture principles with comprehensive security features and full OAuth2 specification compliance.

Next.js 15React 19TypeScript+9 more

Creator

2025

Featured

Portfolio Website

A modern, high-performance portfolio website built with Next.js 15, React 19, TypeScript and Tailwind CSS to showcase professional experience and projects.

Next.js 15React 19TypeScript+4 more

Creator

2023

Featured

Kudos Calendar

A simple calendar application designed to enhance productivity by allowing users to personalize their calendars with logos and names.

Vue.jsAWS AmplifyPrimeVue+4 more

Creator

2024

Manpower App

A technical test application designed to manage basic workforce allocation and employee data updates.

PythonFastAPIFlutter Web+1 more

Skills & Technologies

A comprehensive overview of my technical expertise across various domains of software development.

Programming Languages

Go
Python
TypeScript
JavaScript

Frontend Frameworks

React (Next.js)
Vue (Nuxt.js)

Backend Frameworks

NestJS
FastAPI
Go Gin
Go Fiber

Cloud Platforms

Google Cloud Platform (GCP)
Amazon Web Services (AWS)

DevOps & Infrastructure

Docker
Kubernetes
Helm
Terraform
GitHub Actions
GitLab CI
ArgoCD
Portainer

Databases

PostgreSQL
MySQL
DynamoDB
MongoDB

System Design & Architecture

Microservices
Domain-Driven Design
Event-Driven Architecture
Hexagonal Architecture
Pub/Sub

Development Tools

Git
Jira
Confluence
Docker
Cursor
Copilot
Draw.io
36+ technologies mastered
5+ years of experience

Professional Experience

My journey through various roles and companies, building expertise in software engineering

Software Engineer

Quad, Inc.

Nov 2024 – PresentTokyo, Japan (Onsite)

Develop and maintain web applications for restaurant ordering, payments, health food, and marketing campaigns using Python, Go, and modern cloud technologies.

Key Responsibilities:
  • Develop and maintain web applications for restaurant ordering, payments, health food, and marketing campaigns
  • Implement cloud infrastructure for scalability and performance using GCP
  • Utilize Terraform for infrastructure as code and deployment automation
Technologies:
PythonFastAPIGoReactJSMemcacheCloud RunTerraformGCP

Senior HRMS Developer

Advanced Bank of Asia Ltd.

Jan 2023 – Oct 2024Cambodia (Onsite)

Managed the end-to-end development and implementation of HR Management System modules and careers website, enhancing operational efficiency and user experience.

Key Responsibilities:
  • Managed the end-to-end development and implementation of HR Management System modules, enhancing operational efficiency and user experience
  • Designed technical solutions, including ER modeling and Microservice Architecture, for complex business requirements, enhancing system scalability and foundation robustness
  • Developed reusable node module dependencies for service integration and secure data flow
Technologies:
Vue.jsNestJSPostgreSQLDocker SwarmPortainerOpenShiftHelmArgoCDJfrogE2E EncryptionWebSocketNGINXMicroservices

Software Engineer

Vtech Technology CO., LTD.

May 2021 – August 2022Cambodia (Onsite)

Contributed to developing livestream broadcast, e-commerce, and system administration platforms with focus on performance optimization and scalability.

Key Responsibilities:
  • Developed livestream broadcast and e-commerce platforms
  • Built system administration tools and dashboards
  • Managed AWS deployments on EC2 and S3
Technologies:
TypeScriptNestJSNextJSVue.jsReactDockerRabbitMQRMTPAWS EC2AWS S3

Software Developer (Freelance)

GGMT PTE LTD.

Jan 2021 – Dec 2021Singapore (Remote)

Developed various web applications including landing pages, booking systems, and e-commerce platforms for global clients in remote environment.

Key Responsibilities:
  • Developed company landing pages with modern design and functionality
  • Built travel and property booking systems with payment integration
  • Created an e-commerce platform (Skill Shop) with full shopping cart functionality
Technologies:
ReactJSTypeScriptJavaScriptCSS3HTML5Modern Styling Frameworks
5+
Years Experience
Professional Software Development
4
Companies
Across Multiple Countries
20+
Technologies
Mastered & Applied

Get In Touch

Let's discuss opportunities, collaborate on projects, or just have a conversation about technology

Contact Information

Location

Tokyo, Japan

Follow Me

Education & Accomplishments

Education

Bachelor of Science in Software Engineering

Kirirom Institute of Technology

CambodiaNov 2019 – Oct 2023

Key Accomplishments

Winner AWS Amplify Hackathon 2022 (Build Full Stack Application)

Hashnode2022

Second Place in Canon Photomarathon 2018 Cambodia

I-Qlick Cambodia2018

Third Place in Tepkosal Talent Quest 2016

World Vision2016

Participated SmartEdu University Student Development Program Cohort 3 2021

Smart Axiata2021

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Ready to Work Together?

I'm always excited to discuss new opportunities and innovative projects. Let's create something amazing together!