👋 Hello, I'm Chris Ohk. I'm currently working as a Visiting Senior Researcher at Hanyang University. I previously developed game contents and C++-based game physics engine for Mabinogi: Heroes at Nexon Korea and Rust-based cross-platform interaction engine at Momenti Korea. Also, I established project specifications, technical direction and guided team members with troubleshooting technical issues at EJN. Later, I worked as a Embedded Software Engineer at 42dot.

I'm interested in various topics, so I'm developing various side projects in my spare time.

• RosettaStone: Hearthstone simulator using C++ with some reinforcement learning
• CubbyFlow: Voxel-based fluid simulation engine for computer games
• baba-is-auto: Baba Is You simulator using C++ with some reinforcement learning
• CubbyTower: Simple tower defense game using C++ with Entity Component System (ECS)
• minecraft-rs: A simple Minecraft written in Rust from scratch
• focustime: TUI-based application for ⏱ Pomodoro + 🚫 Site Blocking + 📊 WakaTime Tracking

Also, I'm the representative of C++ Korea, a C++ user group for Korea and Microsoft Developer Technologies MVP.

• Repository for Curriculum Vitae
• Repository for Presentations

• Hanyang University Visiting Senior Researcher (Apr 2026 ~ Current)
• 42dot Embedded Software Engineer (Sep 2024 ~ Feb 2026)
• EJN Tech Lead (Dec 2023 ~ Jun 2024)
• Momenti Engine Engineer (Aug 2021 ~ Nov 2023)
• Nexon Korea Game Client Programmer (Sep 2015 ~ Jul 2021)

• Languages: Modern C++, C#, F#, Rust, Python, Typescript, Julia, Elixir, Nim, Zig
• Topics #1: Computer Graphics / Vision, Game Physics, Game Simulation, Fluid Simulation
• Topics #2: Compiler/Interpreter, Reinforcement Learning, Natural Language Processing

• Microsoft Developer Technologies MVP
• Founder & Administrator at C++ Korea
• Administrator at Reinforcement Learning KR
• Organizer of RustFest Global 2021
• Lecturer of Reinforcement Learning and C++/Rust-based projects at many universites
• Translator of
  • GameSalad by Example Beginners Guide by Acron Publishing
  • Unity Shaders and Effects Cookbook by Acron Publishing
  • Programming 2D Games by Acron Publishing
  • Rust Essentials by Hanbit Media
  • Discovering the Modern C++ by Gilbut
  • Optimized C++ by Hanbit Media