01/ 062026
Zalo Linux Native
An unofficial Zalo port for Linux x86_64. Every native module rebuilt by hand, down to the call bridge. Two-way voice works.
- Reverse engineering
- Native modules
- Electron
@rurimeikoBackend · Reverse engineering · Security
I teach naughty apps to behave.
★ teaching mode: on
Nguyễn Trần Hoàng Long — backend engineer writing C#, Rust and JS. I reverse-engineer apps, dig into security, and run the servers (and local AI) for a university.
“If I can't take it apart, I don't trust it.”
Born 16 October 2003. Backend developer: C#/.NET at work, Rust and JavaScript for everything else. My favourite hobby is reverse-engineering apps and finding out how they break, which is how I ended up porting Zalo to Linux. I also run the servers (and the local AI) a university depends on. Off the keyboard it's music, movies and the occasional Rubik's cube.
- Born
- 16 Oct 2003
- Based
- Can Tho, VN
- Now
- M.Eng, weekends
- Off-keys
- Rubik's sub-50s · music
01Personal
Selectedwork
02/ 062026
Binance P2P Radar
A real-time radar for Binance P2P. Sweeps 400+ ads in under 1.5 seconds and pings Telegram with a one-tap button into the order.
- Multithreading
- Telegram bot
- Docker
03/ 0620246
Serverless Telegram Bot
A starter for Telegram bots on Cloudflare Workers backed by MongoDB. Zero servers to babysit, one command to deploy.
- Serverless
- Template
04/ 062025
Random Food Bot
An AI Telegram bot that decides what you eat today. Moved off Cloudflare Workers once 80ms of CPU time stopped being enough.
- AI
- Bun
- Neon Postgres
05/ 062024
mongodb-cloudflare
A small module that lets Cloudflare Workers talk to MongoDB, where the official driver simply refuses to run.
- Edge runtime
- npm module
06/ 062023
NFC Keeper
A parking-lot app that checks motorbikes in and out with NFC cards instead of paper tickets.
- Android
- NFC
Built with friends
2025Next.js · TypeScript4
WTF Movies
A streaming site built with the dawn1810 crew. The most-starred of our shared repos.
2025JavaScript2
Light Novel Web
A reader for light novels, shared project, chapters and library included.
2023Godot · GDScript
GMTK 2023 Game
A game jam entry: five of us cooking something in two days for GMTK 2023.
02NCTU
ProductionsystemsIbuildandrun
Software Center, Nam Can Tho University
I build and operate internal systems for a university: the portals students and staff use every day, and the infrastructure behind them. Details and source stay inside the organization; this is a reference, not a link.
Reference only · Sep 2025 – present
~4,900
pushes
30+
internal systems
13
months
Headline strength · Local AI
Local AI stack for the university
Set up and run the on-prem inference platform the whole center shares: a chat LLM on dual-GPU vLLM, CPU-served embedding and reranking for Vietnamese RAG, document OCR and speech, a chat UI, all exposed through a secure tunnel. One API, many projects.
- Dual-GPU LLM serving with 256K context and continuous batching
- Vietnamese-tuned embedding + reranker for retrieval
- Document OCR, speech, and ticket-assist pipelines
- RAG and AI assist wired into the student and staff portals
Systems I shipped and keep running
My DNC portal
LeadStudent and staff portal: web PWA plus native Android (Compose) and iOS (SwiftUI).
React · Kotlin · SwiftUI
Admission system
Build & operateOnline admissions: registration, review, and payment flow end to end.
React · CodeIgniter · Docker
EMS
Desktop & APIEducation-management suite for staff and registrars, shipped as a desktop app over a C# API.
Tauri · React · C#
Canvas LMS + NCTU theme
Deploy & themeSelf-hosted Canvas with SSO, a lightweight institutional theme, and video tracking.
Ruby · SSO · MinIO
AI API server
BuildREST backend for RAG, document extraction, and ticket assist over the local models.
FastAPI · Python
3D campus map
Build & optimizeAn interactive 3D campus on the web, compressed and tuned to stay smooth.
WebGL · glTF
University System Core
ArchitectureA microservice foundation: API gateway, identity, notifications, event bus, observability.
Kong · Kafka · Postgres
Realtime person tracker
BuildWebcam person detection and tracking with YOLO, emitting movement commands for robotics.
Python · YOLO
03Background
Studying&building
Education
- 2026 – 2028In progress
M.Eng, Software Engineering
Can Tho University
Research-based master's, studied on weekends alongside full-time work.
- 2021 – 2025Graduated
B.Eng, Software Engineering
Can Tho University of Technology & Engineering
Four years of software engineering; graduated 2025.
Experience
- 2025 – Present
Backend Developer & IT Engineer
DNC Software Center, Nam Can Tho University
- C# / ASP.NET Core + EF Core APIs for the university training system, used by every student and staff member daily.
- Deploy and keep 6+ production servers running, and fix problems fast when they break.
- Set up and run local AI servers, including for business customers.
- 2022
Collaborator
NextGen Vietnam JSC — Dai Viet Group
- Built a batch tool to remove objects from many images at once, using the open-source LaMa inpainting model.
04Timeline
HowIgothere
- 2026
Running a university's AI and portals
Stood up the local inference stack, shipped native My DNC apps, and ported Zalo's native modules to Linux on the side.
- 2025
Joined the software center
Started building internal systems at Nam Can Tho University: the student portal, admissions, and course registration.
- 2024
Moved to the edge
Servers on Cloudflare Workers, Telegram bots on MongoDB, and a driver bridge so the two could talk.
- 2023
First things people used
NFC Keeper on Android, a CTUT course-review extension, a shared streaming site, and a working Hackintosh.
- 2022
Hello, world
A Discord bot, a translator and a calculator I proudly labelled useless. All Python.
Let's build something that holds up.
Have a bug nobody can fix, a system to build, or an interesting engineering problem? Send a direct dispatch — it reaches my Telegram in seconds.