Backend Engineer who ships realtime systems, clean APIs, and the occasional frontend when needed

const nhan = {
  role: "Backend Engineer",
  also: ["occasional Frontend", "team lead when needed"],
  location: "Ho Chi Minh City, Vietnam 🇻🇳",
  focus: ["RESTful APIs", "Realtime systems", "scalable backends"],
  currently: "Building production systems with Node.js, TypeScript & Go",
  funFact: "I use AI tools daily — Cursor, Copilot, ChatGPT — to move faster",
  openTo: ["interesting backend work", "freelance collabs", "coffee chats ☕"],
};

Fullstack-capable, backend-first. 4+ years shipping production systems for startups, SMEs, and international clients (Korea 🇰🇷).
Strong at turning messy requirements into stable features — APIs, realtime chat, payments, background jobs, the whole package.

🎓 B.S. Information Security — Vietnam Academy of Cryptography Techniques (2016 – 2021)

What I reach for most:

Aug 2025 – Apr 2026

• Designed Talk Room — realtime multi-user audio chat with Node.js, Agora SDK, Centrifugo & OSSRS
• Cut third-party streaming costs via single-stream forwarding architecture
• Built host/audience role swapping, raise-hand, talk-time tracking & participant ranking
• Background jobs + scheduling with BullMQ & PostgreSQL
• Full activity logging for every room event (join/leave, kick, role changes…)

Nov 2023 – Dec 2023

• Led a team of 2 building a Discord-based Job Marketplace (middleman model + bot automation)
• Event-driven architecture with RxJS + BullMQ for Discord bot events
• Owned client/PM communication, scope, and weekly delivery

May 2022 – Nov 2023

• Shipped 5 web apps for Korean clients (social network + e-learning)
• RESTful APIs in Node.js/TypeScript + Django — realtime notifications, Google/Apple IAP & local KR payment gateways
• PostgreSQL design, production troubleshooting under tight deadlines
• Mentored juniors on coding standards and delivery pace

Aug 2021 – Apr 2022

• Backend services + React CMS for a housekeeping booking & payment platform
• Scheduling system + local payment gateway with Python FastAPI

May 2021 – Jul 2021

• Shopify themes (Liquid, HTML, CSS, TypeScript) + Node.js backend / Shopify API
• Production templates sold on Envato marketplace 🎉

Contribution Graph

Coming soon — I'm curating a few favorites to showcase here. Stay tuned!

Always learning. Always building. Always down for a good API design debate. ⚡