# Đỗ Nhật Huy (Huy N. Do) — huydn.dev

> Tech Lead · Backend Architect · QA Automation Engineer based in Hanoi, Vietnam. Tech lead and backend architect with a QA automation background. I design systems that serve millions of devices reliably, automate testing and operations, and build IoT solutions for EV charging.

- Website: https://huydn.dev/ (English), https://huydn.dev/vi/ (Tiếng Việt)
- Email: donhathuy@gmail.com
- Phone: +84 978 721 168
- GitHub: https://github.com/donhathuy
- Education: VNU University of Engineering and Technology

## Key numbers

- 2M+ devices served
- 50K+ F&B stores
- 99.9% uptime
- 70+ EV charging stations

## Career (newest first; year = when it started)

- 2024 — CHTLab · EVsafe (https://chtlab.io): Digital transformation and blockchain lab in Hanoi, home of NOTT; EVsafe was spun off from it.
- 2021 — iPOS.vn (https://ipos.vn): F&B technology company behind FABi, serving 2M+ devices and 50K+ stores.
- 2016 — Gloco Ltd (Singapore): Singapore health-tech company behind the MaNaDr telehealth app, with a development office in Hanoi.
- 2015 — Platphorm, LLC: San Francisco company running the NiteFlirt, Everclear and Phrendly marketplaces.
- 2013 — Vietsoftware · IBM ODC: IBM’s outsourcing development center in Hanoi, delivering on IBM Bluemix and Watson.
- 2011 — Cốc Cốc: Vietnam’s home-grown web browser and search engine.

## Work projects

- EVsafe @ EVsafe (https://evsafe.io): Smart charging network for electric motorbikes and cars in Vietnam: charging and battery-swap stations, a driver app and a partner app for station owners. Charge points connect over OCPP/OCPI, devices over MQTT and WebSocket. Numbers: 70+ EV charging stations, 3K+ active users.
- NOTT @ CHTLab (https://nott.ai): AI-powered wellness DePIN platform: NOTT smartwatches and smart scales stream health data in real time, records are secured on a blockchain, and AI turns them into personal insights. A family health dashboard app with gamified challenges and rewards.
- iPOS FABi @ iPOS.vn (https://ipos.vn/en/san-pham/phan-mem-quan-ly-ban-hang-ipos-fabi/): F&B sales management software for restaurants, cafés and milk-tea chains: POS, table split and merge, automatic promotions, MoMo, ZaloPay and VNPAY payments, GrabFood and ShopeeFood orders, role-based permissions and audit logs, plus the FABi Manager app for remote reports. Numbers: 2M+ devices served, 50K+ F&B stores, 99.9% uptime.
- MaNaDr @ Gloco Ltd (Singapore) (https://apps.apple.com/sg/app/manadr-for-patient/id1146330456): Singapore telehealth app: chat and video consultations with doctors, appointment booking, house calls, electronic medical certificates and medicine delivery, on iOS, Android and the web.
- NiteFlirt · Everclear · Phrendly @ Platphorm, LLC: Platphorm’s pay-per-minute marketplaces (San Francisco): NiteFlirt for phone and chat with independent experts, Everclear for guidance from advisors, and Phrendly for text, phone and video conversations.
- IBM Bluemix @ Vietsoftware · IBM ODC: IBM’s cloud platform-as-a-service, now IBM Cloud, together with Watson AI services, delivered for IBM and its clients worldwide.
- Cốc Cốc @ Cốc Cốc (https://coccoc.com): Vietnam’s home-grown web browser and search engine, with more than 22 million users at the time, covering browser, search, maps and ads.

## Side projects (personal)

- [Shopme](https://shopme.vn): Multi-store commerce platform. Modular Go monolith with Next.js storefronts, running entirely on Cloudflare. [Go, Next.js, Cloudflare, Postgres]
- [Tìm Ngày Tốt](https://timngaytot.com): Lunar calendar & auspicious-day finder. PWA with an AI content pipeline that publishes daily articles through an ingest API. [Go Echo, PWA, AI crawler]
- [MCP Chat](https://chat.huydn.dev): Chat app on Model Context Protocol. A chat client and a set of MCP servers that give the assistant real tools. [MCP, LLM, TypeScript]
- Xiaozhi Realtime (private): AI voice assistant on ESP32. A dedicated server for an ESP32 voice device: audio over WebSocket/Opus, conversation by OpenAI Realtime with MCP tools, configured from a mobile web app. [ESP32, Python, OpenAI Realtime, MCP]
- [huydn.dev](https://huydn.dev): This site. A profile page that runs its own test suite on load. Astro on Cloudflare. [Astro, Canvas, Cloudflare]

## Focus areas

- High-load system architecture: Designing backends that stay reliable at scale — the iPOS platform serves 2M+ devices across 50K+ stores at 99.9% uptime.
- QA automation: Risk-based automated suites for web, hybrid and native mobile apps, integrated into CI so every change is verified.
- Automation scripts: Any task done twice becomes a script: deployments, data jobs, reports and routine operations.
- IoT: Connecting devices to the cloud — EV charge points over OCPP/OCPI, MQTT and WebSocket messaging, NOTT wearables, ESP32 and Orange Pi 5, Node-RED and Home Assistant.

## Hobbies

- Singing & music: Vietnamese lyrical songs, pre-war “tiền chiến” classics and bolero — for listening and for singing.
- Tennis & pickleball: Tennis for more than five years, pickleball for over a year, three sessions a week.
- Gaming: PES and Mortal Kombat on PlayStation, Liên Quân Mobile on the phone and CS2 with friends.

## Tech stack

- languages: Go, Ruby, Python, TypeScript, Java, Swift, PHP
- backend: Echo, Gin, Rails, Django, Express, Postgres, Redis, NATS, SQS
- testing: Selenium, Appium, Cucumber, RSpec, Pytest, TestNG, Postman
- infra: Cloudflare, AWS, Docker, Kubernetes, Jenkins, GitHub Actions
- automation: Bash, Python, Go, cron, Node-RED, CI pipelines
- iot: ESP32, Orange Pi 5, MQTT, WebSocket, OCPP, OCPI, Node-RED, Home Assistant

## Tóm tắt (Tiếng Việt)

Tech Lead · Kiến trúc sư Backend · Kỹ sư QA Automation tại Hà Nội, Việt Nam. Tech lead và kiến trúc sư backend xuất thân từ QA automation. Tôi thiết kế hệ thống phục vụ hàng triệu thiết bị ổn định, tự động hoá kiểm thử và vận hành, và xây dựng giải pháp IoT cho hạ tầng sạc xe điện.