Hi, I’m Cuong

I build full-stack AI apps, from agentic RAG systems to scam-detection tools, serving thousands of real users.

AI & Full-stack Web

Tech Lead atChongLuaDao

Ho Chi Minh City, Vietnam

Get in touch See my CV

Experience

Tech LeadatChongLuaDao

Jan 2025Present

Key contributions

Led a team of 4 to build an AI scam website detector with 300+ daily active users, earning 2 national awards: Nhan Tai Dat Viet and Make in Vietnam.
Built an agentic RAG scam adviser with vector-based search, keyword search, tool calling, and real-time web context for 3,000+ users.
Fine-tuned an open-source LLM using LoRA to balance cost and performance.
Scaled legacy APIs to millions of daily requests with monitoring and alerts.
Technical lead for 10+ international partners.

Tech stack

Next.js
SolidJS
TypeScript
Python
PostgreSQL
Redis
MinIO
Docker

Reference letter

From Ngo Minh Hieu (Hieu PC) – CEO of ChongLuaDao

Products shipped

ai.chongluadao.vn

Scam website detector powered by LLMs and threat intelligence, with a live browser agent.

zalo.me/chongluadao

Chatbot on Zalo that checks for scam signals and answers online safety questions based on ChongLuaDao's knowledge base.

tracnghiem.chongluadao.vn

Game about spotting real vs. fake websites, emails, messages, videos, and images.

baovethongtin.com

Web app that improves users' digital security via personalized checklists, assessments, and progress tracking.

Full-stack Developer & AI IntegratoratLumist

MayAug 2025

Key contributions

Built a science-backed AI vocab system used by 1,000+ learners.
Added personalized LLM-powered test analysis and student question answering.
Resolved a critical bottleneck to deliver 5x faster page loads.

Tech stack

Next.js
TypeScript
Supabase
Vercel AI SDK

Product shipped

lumist.ai

An all-in-one Digital SAT prep platform with an extensive question bank, AI-driven performance analysis, predictive scoring, gamification, and more.

Projects

Examinai

AI-powered IELTS Learning Platform

Examinai

AI-powered IELTS Learning Platform

Integrated multimodal AI for text generation, image understanding, text-to-speech, and speech-to-text.
Built reliable writing and speaking assessment flows based on official rubrics and multiple LLM judges.
Built an agentic RAG question-answering system grounded in an IELTS knowledge base.
Curated 1,000+ practice tests via web scraping.

Tech stack

Next.js
TypeScript
Python
Supabase
Vercel AI SDK

See it in action GitHub

InfiniteCompute

E-commerce Store for GPUs with AI Advisor

InfiniteCompute

E-commerce Store for GPUs with AI Advisor

Built a full e-commerce store with checkout, reviews, coupons, and admin tools.
Created an agentic RAG recommendation system combining product database search, internal documents retrieval, and real-time web context.
Dockerized all services to support reproducibility across environments.

Tech stack

Vue.js
Python
FastAPI
PostgreSQL
Docker
OpenRouter

See it in action GitHub

Research

Published

A Novel Spam Review Detection Architecture Using Large Language Models

Spam review detection architecture: ViSpamReviewV2 dataset feeding a preprocessing pipeline into the Llama 3.1 model

Fine-tuned 3 LLMs using LoRA to detect spam reviews on Vietnamese e-commerce platforms.
Improved accuracy of prior work from 88.54% to 92.12%, and F1 score from 73.49% to 78.86%.
Deployed scalable, cost-efficient serverless GPU inference for the models.

Read the paper

Under Review

Beyond URLs: Content-Aware Malicious Website Detection Using Multilingual BERT

Trained 20+ models (transformers, traditional ML models, hybrid ensembles) in parallel using cloud GPUs, reaching 99.06% accuracy on a 68,954-sample test set.
Surpassed 4 prior works by up to 8.28% in accuracy.
Compiled and cleaned a large real-world dataset of 689,556 webpages.
Designed a preprocessing pipeline to cut input noise by over 96%.

Recognition

Awards

Nhan Tai Dat Viet 2025

3rd place, "Promising Digital Technology" category. Top 17 of 122 products at Vietnam's most prestigious tech award.

Make in Vietnam 2025

Bronze in "Promising Digital Technology". Jumped from Top 10 (2022) to Top 3 with the new AI-powered scam website detector.

Best Developers in Vietnam 2023

3rd place against 400+ participants in a nationwide hackathon with our AI study companion project.

LeetCode T-shirt

A badge of honor among LeetCoders. Earned through solving 750+ problems on data structures and algorithms throughout 2 years, ranking in the top 5%.

Vietnam Television (VTV) coverage

Dec 2025

VTV9 nationwide anti-scam panel

Panelist on VTV9's nationwide anti-scam campaign with Viettel Security and the Ministry of Public Security, sharing the tech perspective alongside policy and law-enforcement experts.

Sep 2025

VTV9 talk show: AI-powered scam prevention

Featured guest on VTV9's Kính Đa Chiều talk show, breaking down how AI can be used to detect and stop online scams targeting Vietnamese users.

Dec 2025

VTV9 talk show: Living in the age of AI

Returning guest on Kính Đa Chiều to discuss the broader impact of the AI era, from everyday productivity to the new risks it brings.

Mar 2026

VTV9 talk show: Inside AI-powered scam tactics

Invited back to Kính Đa Chiều to walk viewers through emerging AI-driven scam techniques like deepfakes, voice cloning, and AI-generated phishing.

Presentations

Bangkok, ThailandAug 2025

Mekong-U.S. Partnership Track 1.5 Policy Dialogue on Digital Economy

Joined the Strengthening Cyber Resilience in ASEAN panel alongside Microsoft and Cloudflare representatives to share how Chongluadao detects AI-generated scam websites at scale.

Hue, VietnamSep 2025

Security Bootcamp 2025 by Vietnam Internet Association

Presented "Applying AI in Cybersecurity: Detecting Scam Websites Using LLMs" with the Chongluadao AI team at Vietnam's flagship infosec event, themed "Resilience."

Can Tho, VietnamOct 2025

FPT International Conference on Emerging Trends in Computing 2025

Presented our LLM-based spam review detector for Vietnamese e-commerce at FETC's inaugural edition, themed "AI Solutions for Developing Countries."

OnlineSep 2025

Young Southeast Asian Leadership Initiative (YSEALI) Roundtable

Invited back by the Stimson Center as an expert speaker to share key takeaways on cyber resilience and scams with YSEALI alumni ahead of the Policy Dialogue's summary report launch.