From Du With Code

Security Project

Web Security Scanner

Principal Engineer

Dec 2024 – Jan 2025 • Personal Project

Automated web vulnerability assessment and scanning tool with comprehensive security analysis.

Security Features

Detection of SQLi, directory disclosure, and security header issues

Nmap integration for port and network analysis

Secure Electron-based UI with license protection

Security

Nmap

Electron

📝

Latest Notes

Fresh from the keyboard — my latest thoughts, discoveries, and experiments.

SQL Cơ Bản #2.1: DDL - Định Nghĩa Cấu Trúc Dữ Liệu

Hiểu rõ DDL (CREATE, ALTER, DROP, TRUNCATE), tác dụng, hành vi, và những best practice khi thay đổi schema. Bao gồm case study về downtime và migration.

#ddl

Nov 18, 2025

SQL Cơ Bản #2: Các Lệnh Cơ Bản và Truy Vấn Đơn Giản

Tổng hợp các lệnh SQL cơ bản (SELECT, INSERT, UPDATE, DELETE), cách viết truy vấn đơn giản và kết nối các bảng (JOIN) với ví dụ thực tế

#queries

Nov 16, 2025

SQL Cơ Bản #1: Tìm Hiểu về Cơ Sở Dữ Liệu Quan Hệ

Hướng dẫn toàn diện cho người bắt đầu về cơ sở dữ liệu quan hệ, SQL, và cách thức hoạt động của chúng

GitHub Facebook Instagram

#relational-database

Nov 15, 2025

Vector Embeddings and Similarity Search in LangChain and ChromaDB

Deep dive into embeddings, vector representations, and similarity algorithms for RAG systems

Jan 20, 2025

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Tech Stack & Expertise

Technologies I work with and lead teams in implementing

🎨 Frontend Technologies

React, Next.js, TypeScript, Tailwind CSS, Three.js, Vue, Vite, and more

"Code is like humor. When you have to explain it, it's bad."

— Cory House

"The best error message is the one that never shows up."

— Thomas Fuchs

⚙️ Backend & Cloud

Node.js, Python, Spring Boot, Docker, Kubernetes, GCP, Azure

🗄️ Database & AI/ML

PostgreSQL, MongoDB, Redis, Elasticsearch, TensorFlow, PyTorch

"Data is the new oil, but unlike oil, data is forever."

— Data Science Proverb

"The best way to predict the future is to build it."

— Peter Drucker

🚀 DevOps & Leadership

Jenkins, GitHub Actions, Prometheus, Leadership, Team Building

View full tech stack on GitHub

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👋 Hey, I'm Bui An Du

From Du With Code

A mix of notes, ideas, and things I break (and sometimes fix) 🐈

Start Reading About Me

Notes Written

Topics Covered

∞

Bugs Fixed

👨‍💻

About Me

🐈

The Cat CTO

Passionate about clean code, beautiful design, and occasionally causing chaos in production environments. Always learning, always building.

"Code is poetry, bugs are plot twists" — Me, probably

Professional Experience

Building scalable solutions and leading technical innovation in enterprise environments.

🚀 Full-Stack Development • 🤖 AI Integration • ☁️ Cloud Architecture • 🔒 Security

Current Role

SSIT Joint Stock Company

Full Stack Developer

Jul 2024 – Present • 11-employee startup

Leading development of ERP and management platforms with focus on scalability and performance.

Key Achievements

Architected and led scalable full-stack platforms from design to deployment

Implemented CI/CD pipelines and monitoring with Docker, Prometheus, Loki, Grafana

Enhanced system reliability and maintainability across software lifecycle

Docker

CI/CD

Monitoring

Major Project

TuyenSinhOnline

Full Stack Developer

May 2025 – Jul 2025 • 3 months

Complete student admission management system built with Turborepo monorepo architecture.

Key Features & Impact

AI-powered OCR for automated student data extraction

90% manual work reduction

Secure authentication, data validation, and processing for 2,000+ applications

Real-time admin dashboard with Grafana and Loki monitoring

AI/OCR

Turborepo

Monitoring

Personal Project

Hom Nay An Gi

Full IT Department

Feb 2025 • Personal AI Project

AI-powered meal recommendation application with advanced search capabilities.

Technical Highlights

Vector + keyword search improving recommendation accuracy

40% accuracy improvement

Intuitive UI with real-time recipe retrieval and filtering

Optimized backend APIs for smooth data delivery

AI/ML

Vector Search

Security Project

Web Security Scanner

Principal Engineer

Dec 2024 – Jan 2025 • Personal Project

Automated web vulnerability assessment and scanning tool with comprehensive security analysis.

Security Features

Detection of SQLi, directory disclosure, and security header issues

Nmap integration for port and network analysis

Secure Electron-based UI with license protection

Security

Nmap

Electron

📝

Latest Notes

Fresh from the keyboard — my latest thoughts, discoveries, and experiments.

SQL Cơ Bản #2.1: DDL - Định Nghĩa Cấu Trúc Dữ Liệu

Hiểu rõ DDL (CREATE, ALTER, DROP, TRUNCATE), tác dụng, hành vi, và những best practice khi thay đổi schema. Bao gồm case study về downtime và migration.

#ddl