Decision engines for consumer lending
Gradient-boosted models (XGBoost) and rules in production on BigQuery and Vertex AI, deciding who to contact, when and how.
Long Nguyen
Data scientist & vibe coder · Ho Chi Minh City
I build models that make decisions, and agents that build the rest.
scroll01 · signal
Data science
Marketing mix modeling
Bayesian MMM (Google Meridian) to split sales lift across channels and plan budgets.
Education
Master of Data Science, University of British Columbia (2025).
BBA Finance, First Class Honours, University of New Brunswick (2023).
- Python
- SQL
- BigQuery
- Vertex AI
- XGBoost
- Bayesian modeling
- experimentation
02 · build
Vibe-coded
Real tools, built by directing AI agents from a prompt.
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Piloxita Master Bot
Telegram drives Claude Code on my laptop from my phone, with a team of agents (researcher, builder, critic) and a guard that asks before anything risky.
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Second brain
An Obsidian knowledge base that agents keep. They digest every day and ingest articles and videos with local Whisper.
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Piloxita Hub
A self-hosted dashboard for reports, videos and bot status, reachable from anywhere over Tailscale.
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Recruiting assistant
A bot that screens CVs against job descriptions and drafts job posts.
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Short-video pipeline
Vertical videos with Vietnamese voiceover, built from a prompt.
03 · watch
Videos
Made by the short-video pipeline: script, voice, animation and captions from a prompt.
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The automaton
An AI agent that has to earn its own money or stop: what it can do, the risks we found in the code, and how we locked it down. In English, 2:53.
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The automaton, in Vietnamese
The same story for a Vietnamese audience, with Vietnamese voice and captions. 2:57.
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FocusFlow pitch
A 22-second product teaser for a made-up app, generated end to end as a demo. The product and its numbers are fictional.
Music in the automaton videos: “Inspired” by Kevin MacLeod (incompetech.com), licensed under CC BY 4.0.
Piloxita Home Assistant
A private assistant that one household runs on its own computer. It helps the household's members with everyday office work: finding and summarising emails and documents, drafting replies, and preparing files.
It is not a public service. It has no sign-up and is used only by the people who set it up.
It asks for Gmail and Google Drive access only to do what the signed-in person asks: searching and summarising their email and files, saving drafts, and downloading files they request. Nothing is used for advertising, profiling or training; see the privacy policy.