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About

Full-stack Developer based in Ho Chi Minh City, Vietnam

Hi, I'm Nguyen Hong Hai, the author of this blog.

I grew up in the countryside, and I was lucky that my parents let me use a computer earlier than most kids my age. Like pretty much every kid with a computer back then, I used it to… play games. Warcraft, Half-Life 2, CrossFire, FIFA Online 3, 3Q, I played them all.

What made me fall for coding is the moment I learn something new and understand how it works: how the logic flows, why you write it this way and not that way. Those “oh, so that's how it works” moments are what keep me in this field. The blog is where I write them down, as simply as I can (in Vietnamese).

I graduated from college and have been working as a full-stack developer for a little over a year, learning a lot that school never taught me. But the more I worked, the more I saw how thin my fundamentals were, so I decided to continue to a bachelor's degree at HCMUTE. Not for a nicer diploma, but to stand on firmer ground on this path.

Outside of work, I play football, go to the gym, play the guitar, and listen to podcasts.

Experience

Full-stack Developer, Hoang Phuc Thanh Immigration & Trade Co., Ltd

Sep 2025 – Present

Real-time Medical Device Management System

  • Architected the core backend with Node.js (Express.js).
  • Implemented real-time alerting via Socket.io.
  • Built an interactive dashboard with React.js.
  • Optimized PostgreSQL queries, cutting response time by about 40%.
  • Managed Ubuntu servers, Nginx and Docker Compose.

Front-end Developer Intern, Hoang Phuc Thanh Immigration & Trade Co., Ltd

Jun 2025 – Sep 2025

CRM System

  • Built a responsive UI with React.js and Tailwind CSS.
  • Integrated RESTful APIs, improving team efficiency by about 20%.

Education

HCMUTE, Ho Chi Minh City

In progress

Information Technology (college-to-bachelor's program).

Van Lang Sai Gon College

2023 – 2025

Information Technology, GPA 3.17 / 4.0.

  • 3rd Prize, Altair Engineering Challenge 2025
  • Outstanding Student Award (2023 – 2024)

Skills

Frontend
JavaScript, TypeScript, HTML5, CSS3, React.js, Next.js, Vite, Tailwind CSS
Backend
Node.js, Express.js, NestJS, Prisma
Databases
PostgreSQL, MySQL, MS SQL Server, Redis
APIs
RESTful API, Swagger, Postman, Socket.io
DevOps
Docker, Docker Compose, CI/CD, Nginx, Linux (Ubuntu), Windows Server, MinIO S3
Version control
Git, GitHub

Resume

You can download my CV as a PDF, or reach me through the contact page.