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zintaen/README.md

Stephen Cheng's Dev Card


Typing SVG

Stephen Cheng

🧠 AI-First Solution Architect · 🇻🇳 Ho Chi Minh City, Vietnam


"Ships in harbor are safe, but that's not what ships are built for." 🚢


👨‍🚀 About

I design Agentic AI workflows, RAG pipelines, and low-latency microservices that bridge advanced ML with measurable enterprise ROI. For a decade I've been the person teams call when a system has to stay up, ship fast, and still pay for itself.

  • 🧠 Now — Consulting AI Architect · Agentic AI + RAG blueprints across GCP & Azure
  • 🛠️ Recently — Led AI inference optimization at CADDi: cut latency 60%, saved ~$180K/year
  • 🎯 Open to — Senior / Principal / Staff AI Architect roles · Education & Healthcare collabs
  • 🎓 Carnegie Mellon × Van Lang · BEng, Computer Software Engineering (2010–2016)
  • 🎤 Off keyboard — I sing. Ask me about the setlist.

📊 Impact at a glance

3M+

manufacturing drawings
indexed & queryable

60% ↓

AI inference
latency reduction

$180K

annual cloud
infrastructure saved

99.95%

production uptime SLA
across 12 services

50K+

RAG document chunks
in vector stores

10K+

concurrent enterprise
learners served

35% ↓

enterprise cloud spend
via FinOps governance

faster candidate-to-role
matching (14d → 3d)

🏅 Elite 2026 Credentials


🧰 Tech Arsenal

🤖 AI & Automation

⚡ Performance & MLOps

☁️ Cloud Infrastructure

🔧 Backend & Integration

🎨 Advanced Frontend

🛡️ Methodologies & Governance


🗺️ Career Trajectory

2026 ▸ Independent Consulting         · Consulting AI Architect      · Agentic AI + RAG blueprints (GCP, Azure)
2023 ▸ CADDi                          · Senior Full Stack Engineer   · 3M+ drawings · 60%↓ latency · $180K/yr saved
2020 ▸ Kydon Group  🇸🇬                 · Front End Lead               · 10K+ learners · sub-200ms · MCP-style APIs
2019 ▸ Vincere.io                     · Senior Web Developer         · 2K+ firms · 5× faster placement · 99.9% SLA
2018 ▸ Spirit Labs                    · Full Stack / Distributed     · Formal verification · 95%+ TDD coverage
2017 ▸ ekino Vietnam                  · Frontend Developer           · SPAs for 500K+ MAU · 45%↓ page latency
2016 ▸ Ministry of Natural Resources  · Jr Web Dev / Data Systems    · 50K+ datasets · 12 provincial nodes

📌 Featured Projects

🛡️ dom-defender

Runtime DOM hardening & tamper detection for React + TypeScript apps. A lightweight guardrail layer that watches for injected nodes, prototype pollution, and script-tag smuggling before they reach your users.

Stack: React · TypeScript · Vite · Tailwind
Cross-platform Tauri desktop app + CLI for managing git aliases. 270+ curated aliases, 229 tests, Rust core with a React/TS shell. The tool I wish existed when I was onboarding engineers across 6 repos.

Stack: Rust · Tauri · React · TypeScript

💌 wife-cv

A hand-crafted, design-forward résumé web app built for my wife — with a moodboard-driven visual system, custom fonts, and a tiny Node server. Proof that a CV can have a point of view.

Stack: TypeScript · Vite · Node.js

✍️ Writing

Long-form notes on agentic AI, RAG architecture, inference economics, and the occasional rant about micro-frontends — on Medium.

- [Prompts are code. Mine has a regression harness.](https://medium.com/@zintaen/prompts-are-code-mine-has-a-regression-harness-b7e6c78310f2?source=rss-a77250ac42f4------2) Apr 22, 2026- [I Built a Desktop App to Fix the Messiest Part of My Git Workflow](https://medium.com/startup-insider-edge/i-built-a-desktop-app-to-fix-the-messiest-part-of-my-git-workflow-c432d0bc90f3?source=rss-a77250ac42f4------2) Mar 02, 2026- [The Anti-Inflation RPG That’s Actually Paying Out (And Integrating Pi)](https://medium.com/@zintaen/the-anti-inflation-rpg-thats-actually-paying-out-and-integrating-pi-2cfeda7191d1?source=rss-a77250ac42f4------2) Jan 21, 2026- [The “God Mode” Toggle: Architecting Gemini’s Personal Context](https://ai.plainenglish.io/the-god-mode-toggle-architecting-geminis-personal-context-151625e912f0?source=rss-a77250ac42f4------2) Jan 12, 2026- [Stop Prompting, Start Architecting: How I Built a “Universal” Second Brain in Gemini](https://ai.plainenglish.io/stop-prompting-start-architecting-how-i-built-a-universal-second-brain-in-gemini-c4c49a5a2761?source=rss-a77250ac42f4------2) Jan 12, 2026

Medium


📅 Book a 30-min architecture chat

If you're standing up agentic AI, debating a RAG stack, or trying to cut inference cost in half — grab a slot. First call's on me.

Book via Cal.com Email


📈 GitHub Pulse

zintaen's GitHub stats

Top Languages

Activity Graph


🤝 Let's build something

I'm most useful to teams that are:

  • Standing up Agentic AI or RAG for the first time and need a production-grade blueprint
  • Running inference workloads that are slow, expensive, or both
  • Migrating monoliths to micro-frontends / event-driven microservices without breaking SLAs
  • Shipping AI features under SOC 2, PII, or HITL constraints

If any of that sounds like your week — say hi.

LinkedIn GitHub Facebook Email

☕ Support my work

Buy Me A Coffee Ko-fi

⚡ Built with late-night espresso, strong opinions, and a healthy fear of unbounded context windows.

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