Do Quoc Viet (vietdoo) — Software Engineer @ VNPT | Founder @ VNDO
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CURRENTLY BUILDING

Do Quoc Viet

Software Engineer @VNPT LogoVNPTFounder @VNDO LogoVNDO

Part programmer, part prompt whisperer, full-time builder.Feel free to reach out if you have a project in mind, want to collaborate, or just want to say hello.

About me

Hi! I’m Do Quoc Viet (vietdoo), a Software Engineer @ VNPT with 3+ years of experience. I specialize in building scalable backend systems, Big Data pipelines, and cloud-native microservices. Currently, I’m engineering the National Public Service Portal, serving millions of citizens nationwide.

Stack & tools
Apache SparkApache KafkaHadoop HDFSPythonC++Spring BootFastAPIMicroservicesRedisSQL / NoSQLKubernetesDockerLinuxNext.js

Architecting scalable data infrastructure by day, building modern web experiences and AI agent workflows by night. Obsessed with clean code, low latency, and problem-solving.

Blog

68 POSTS
Jev and System One: When AI Returns Typed Decisions Instead of Prose
ai
Sep 22, 2026

Jev and System One: When AI Returns Typed Decisions Instead of Prose

Tutorial: Integrate Cloudinary into Any AI Coding Agent in 5 Minutes with AI Power Start
architecture
Sep 8, 2026

Tutorial: Integrate Cloudinary into Any AI Coding Agent in 5 Minutes with AI Power Start

LLM-as-a-Judge Calibration in Production: Human Agreement, Drift, and the Needs-Review Boundary
engineering
Sep 6, 2026

LLM-as-a-Judge Calibration in Production: Human Agreement, Drift, and the Needs-Review Boundary

The Context Firewall: Redaction, Tokenization, and Data Lineage Before the Prompt
engineering
Sep 5, 2026

The Context Firewall: Redaction, Tokenization, and Data Lineage Before the Prompt

Agent Receipts: A User-Readable Proof of What Changed
engineering
Sep 3, 2026

Agent Receipts: A User-Readable Proof of What Changed

Recent Articles
architectureSep 8

Tutorial: Integrate Cloudinary into Any AI Coding Agent in 5 Minutes with AI Power Start

engineeringSep 6

LLM-as-a-Judge Calibration in Production: Human Agreement, Drift, and the Needs-Review Boundary

engineeringSep 5

The Context Firewall: Redaction, Tokenization, and Data Lineage Before the Prompt

my time
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your time---
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A full colorful human (un nature) living in 2500, his pet is a mini dinasour, walking in the sky citA futuristic cityscape in the year 2075, where humans have integrated AI into their brains, creating (1)A hyper-realistic scene of a giant chef grilling an enormous fishvndo-01vndo-02A full colorful human (un nature) living in 2500, his pet is a mini dinasour, walking in the sky citA futuristic cityscape in the year 2075, where humans have integrated AI into their brains, creating (1)A hyper-realistic scene of a giant chef grilling an enormous fishvndo-01vndo-02

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Technical notes & personal reading log

12books