4uckd3v@profile:~$ whoami
Duc Nguyen
I have hands-on experience in competitive programming, web development, generative AI, and web penetration testing.
This site is a compact profile and home for the work I care about most: building on the web, exploring generative AI systems, practicing security, and publishing technical posts I can revisit over time.
about
My background combines competitive programming, technical activities, and independent building. I work across web platforms, AI-assisted systems, and web security, and I learn best by maintaining real projects, supporting contests, and documenting the process clearly enough to revisit later.
focus
The areas I am actively going deeper on right now.
Web Penetration Testing
Built around current training at CyberJutsu Viet Nam, with practice on common web vulnerabilities, exploitation techniques, and security reporting.
Generative AI
Hands-on work with RAG, multi-agent systems, prompt engineering, and applied AI systems built for practical use cases.
Web and Platforms
Project work in web development, database-backed systems, CMS-style products, and platform maintenance such as NBKOJ.
Competitive Programming
Experience in algorithmic problem solving, contest environments, technical support, and problem-setting work for programming competitions.
blog
Posts are temporarily hidden while I refresh the blog.