Dao Nguyen Hoang
Software Dev
Game Dev
Pentester
// cv.2025 · hoangcoderr
DAO NGUYEN HOANG
Software Engineer
Game Developer
Pentester
20 y/o Software Engineering student at Ton Duc Thang University. Passionate about building innovative applications, crafting game experiences, and security research. Champion of CyberNight Game TDTU Season 1 (2026).
Education
Software Engineering GPA 3.5
2025 – present
Ton Duc Thang University — Junior Year
Experience
Freelance Developer — Cafeland
2025
Outsource · 12 Real Estate Management Tools
Independently designed and delivered 12 web-based business tools for Cafeland's real estate platform, covering the full property investment workflow.
  • Built loan calculator, cash flow projector, ROI analysis, property valuation and rental yield tools
  • Integrated with Cafeland's internal standard: Laravel 11 backend, jQuery 3.6 / Bootstrap 5 frontend
  • Secured all API endpoints with HMAC SHA256 token authentication
Ngọc Rồng Online — Server & Client Dev
2024 – present
Independent Game Developer · MMO Private Server
Set up and maintained a private server for Ngọc Rồng Online (Vietnamese mobile MMO). Modded and rebuilt the game client from source to add custom features, balance fixes, and UI improvements.
  • Reverse engineered the original client to understand game protocols and data structures
  • Developed custom server-side logic, game mechanics, and event systems
  • Managed Linux server environment for hosting and deployment
tooltvt.com — Tool Sales Website
2024 – present
Founder & Developer · Ngọc Rồng Tool Store
Built and operated a web-based tool store selling automation and utility tools for Ngọc Rồng Online players. Handles product listing, licensing, and payment integration.
MMO Game Source Seller
2025 – present
Independent Game Developer
Analyzed and modified game frameworks (J2ME, Unity, LibGDX) to build custom tools. Provided technical support for modding communities and developed reusable libraries with optimized game performance.
Projects
FirewallPortManager
C#
↗ github.com/hoangcoderr/FirewallPortManager
Windows Forms app for managing Windows Firewall rules via GUI. Tabbed inbound/outbound management, profile filtering, search, rule templates (JSON/XML), real-time status monitoring. Direct Windows Firewall API integration.
Security ToolC#.NET WinFormsFirewall API
cleanCatClient
Java
↗ github.com/hoangcoderr/cleanCatClient
Custom Minecraft PvP client built on top of LWJGL/OpenGL. Hooks into the game engine to improve hit registration, render pipeline, and combat responsiveness.
Game DevJavaOpenGLLWJGLModding
Keylogger
Python
↗ github.com/hoangcoderr/Keylogger
Python-based keylogging tool for cybersecurity research and system activity analysis. Data capture, encryption, and ethical security testing capabilities.
SecurityPythonEncryptionResearch
TDSCoinMaker
C#
↗ github.com/hoangcoderr/TDSCoinMaker
Automated system interacting with the TDS platform via API. Task automation (likes, follows), multi-account management, and real-time progress tracking.
AutomationC#APIBot
Awards
🥇
1st Place — Champion
CyberNight Game TDTU Season 1
University-level CTF & Cybersecurity competition — 2026
🥉
Top 3
Recursive Coding Game — TDTU
University-level algorithmic programming contest — 2025
🎓
Participant
Vietnam National Student IT Olympics
National-level IT & programming olympiad — 2025
BẢN TIẾNG VIỆT