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Hello, I'm

Mach Ngoc Xuan

Fullstack Developer

I build scalable, secure, and user-centric applications. With expertise in NestJS, React, and Modern Cloud Architecture, I turn complex problems into elegant solutions.

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Focused on clarity, reliability, and long-term impact.

About

Profile

Fullstack Developer with a strong focus on Backend development (Node.js, NestJS) and modern Frontend technologies (React, Next.js).

I specialize in building scalable RESTful APIs and high-performance web applications. I have hands-on experience developing and maintaining 100+ production APIs, designing clean backend architectures (Module–Service–Repository), and optimizing database performance. I also build responsive user interfaces using React, Tailwind CSS, and Ant Design.

Focus Areas

Backend (Node.js, NestJS, Express)
Frontend (React, Next.js, Tailwind CSS)
Databases (MySQL, PostgreSQL, MongoDB, Redis)
Architecture (Microservices, RESTful APIs)
01

Backend Engineering

Designing and developing RESTful APIs with Node.js (Express, NestJS), focusing on clean architecture, business logic handling, and performance optimization.

02

Frontend Development

Building responsive and user-friendly interfaces with React and Next.js, managing state with Redux, and applying modern UI frameworks like Tailwind CSS and Ant Design.

03

Security & System Design

Implementing secure authentication using JWT (Access & Refresh Tokens), HTTP-only cookies, and RBAC for access control in real-world applications.

My professional journey in the software industry.

Work Experience

Backend Developer

Sunshine Software

Jun 2025 - Jan 2026
  • • Developed and maintained 100+ RESTful APIs for web and mobile systems in a production environment.
  • • Structured backend architecture using Module–Service–Repository pattern, improving scalability and maintainability.
  • • Implemented secure authentication and authorization using JWT (Access/Refresh Tokens), HTTP-only cookies, and RBAC Guards.
  • • Designed and optimized MySQL databases (25+ tables), focusing on query performance, indexing, and data integrity.
  • • Collaborated with frontend teams through well-defined API contracts and participated in Agile/Scrum workflows using Jira.
  • • Improved system reliability by validating input data, handling edge cases, and ensuring stable API performance.
NestJSNode.jsMySQLTypeScriptJWTRedis

Fullstack Developer

Tam Khoa Technology

Feb 2025 - May 2025
  • • Developed end-to-end features for internal systems and client projects using Node.js (Express) and React.
  • • Built responsive and modern UI with Ant Design and Tailwind CSS, improving user experience and usability.
  • • Managed frontend state with Redux, ensuring efficient data synchronization between client and server.
  • • Designed and implemented RESTful APIs with focus on authentication, input validation, and query optimization (JOIN, pagination).
  • • Worked closely with QA team to test, debug, and optimize system performance before production deployment.
Node.jsExpressReactReduxTailwind CSSAnt Design

A comprehensive toolkit for modern web development.

Technical Proficiency

Frontend

ReactJS / Next.js

ReactJS / Next.js

Frontend

Next.js

Next.js

Frontend

Tailwind CSS

Tailwind CSS

Frontend

Ant Design

Ant Design

Frontend

React Native

React Native

Frontend

Java Swing

Java Swing

Frontend

Backend

Node.js (Express)

Node.js (Express)

Backend

NestJS

NestJS

Backend

Spring Boot

Spring Boot

Backend

Java

Java

Backend

Python

Python

Backend

Database

MongoDB

MongoDB

Database

SQL Server

SQL Server

Database

MySQL

MySQL

Database

Neo4J

Neo4J

Database

DynamoDB

DynamoDB

Database

PostgreSQL

PostgreSQL

Database

Cloud & Tools

AWS (S3)

AWS (S3)

Cloud & Tools

Docker

Docker

Cloud & Tools

Git / GitHub

Git / GitHub

Cloud & Tools

Postman

Postman

Cloud & Tools

EC2

EC2

Cloud & Tools

Jira

Jira

Cloud & Tools

Highlights from my academic and professional work.

Featured Projects

Clone Zalo (Chat Application)
Web & Mobile

Clone Zalo (Chat Application)

Feb 2025 - May 2025

  • • Real-time messaging system synchronized across Web and App platforms.
  • • Features: 1-1 chat, group chat, file sharing, emoji, message recall/forward.
  • • Group management: Create/disband groups, manage members and permissions.
  • • Secure authentication via Email (OTP) and Socket.io integration.
React NativeReact JSAWS S3MongoDBSocket.ioExpress
View Project
Pet Toys E-commerce
Web

Pet Toys E-commerce

Jan 2025 - March 2025

  • • Full-featured e-commerce site for pet products.
  • • User features: Product view, Cart, Checkout, Google/Phone Login.
  • • Admin dashboard: User management, Product statistics, Inventory management, Import/Export data.
  • • Secure JWT Authentication with HTTP-only cookies.
React JSMongoDBTailwindCSSNode.js
View Project
Hotel Reservation Management
Desktop

Hotel Reservation Management

Sep 2024 - Jan 2025

  • • Desktop application for hotel management workflows.
  • • Features: Room booking, Check-in/out, Invoicing, Staff management.
  • • Reporting: Revenue, services, and room occupancy stats by day/month/year.
  • • Role-based access control for Staff and Managers.
Java SwingSQL ServerMaven
View Project
Supermarket Sales Management
System

Supermarket Sales Management

Feb 2025 - Present

  • • Sales management system with barcode scanning integration.
  • • Features: Customer management, Invoice processing, Inventory tracking.
  • • Distributed architecture using Java RMI and Socket for async processing.
  • • Comprehensive statistical reporting exportable to Excel.
Java SwingMySQLJava SocketRMI
View Project

Academic background and core foundations.

Education

Education

Industrial University of Ho Chi Minh City

Software Engineering

Software architectureDistributed systemsDatabase designWeb engineeringSystem designAlgorithms and data structuresObject-oriented programming (OOP)Team-based project development with documentation and testingCapstone projects with Java, Spring Boot, and modern web stacks

2022 - Present

Ho Chi Minh City, Vietnam

Highlights

  • ▹Built capstone projects with Java, Spring Boot, and modern web stacks.
  • ▹Strengthened foundations in OOP, data structures, and system design.
  • ▹Delivered team-based projects with clear documentation and testing.

Let’s build something meaningful together.

Get in Touch

Let's Connect

I take on backend-heavy and fullstack work: APIs, integrations, and performance-focused web apps. Share a short brief and I will reply with a clear plan and timeline.

API & authentication
System integration
Performance & reliability
Documentation & DX
Send Email
machngocxuan2004@gmail.com
Response time

Replies within 24h

Location

Ho Chi Minh City, Vietnam

Availability

Open to freelance & full-time

Social

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Project Brief

Gửi tin nhắn

Nêu bối cảnh, mục tiêu và timeline. Tôi sẽ phản hồi với bước tiếp theo rõ ràng.