• Name: Minha Armada Ju
  • Job Title: Game Engine/Graphics Programmer
  • Email
    • onion@pearlabyss.com (professional)
    • alegruz@khu.ac.kr (academic/personal)
  • Links
  • Location
    • Uiwang-si, Gyeonggi-do, Republic of Korea
  • Languages
    • Korean (Native)
    • English (Fluent)
    • Spanish (Basic)
    • Chinese (Basic. HSK 4)

Summary

  • Game engine/graphics engineer with experience in real-time rendering, Direct3D 12, Vulkan, and shader compilation.
  • Currently working at Pearl Abyss on game engine systems.
  • Passionate about real-time path tracing and developing advanced rendering techniques

Skills

  • Programming Languages
    • Assembly (6502, x16, AMD64, RDNA)
    • C/C++ (prefers C++20)
    • Python
    • Java/Kotlin
    • HLSL
  • Graphics & Game Engine Development
    • Direct3D 12, Vulkan, OpenGL
    • Unity / Unreal
  • Optimization & Systems
    • CPU & GPU Optimizations
    • Shader Compilations
  • Tools & Softwares
    • RenderDoc, NVIDIA Nsight, PIX, NVIDIA Aftermath, PS5 Razor GPU, Snapdragon Profiler, Android GPU Inspector, Intel GPU Analyzer
    • AMD µProf
    • Git, CMake, Visual Studio, Visual Studio Code, PyCharm, Android Studio

Work Experience

  • Game Engine Systems Engineer - Pearl Abyss - (Jan 2023 - Present)
    • BlackSpace engine
    • Shader compilation system
    • Material system
    • Android porting (Adreno/Exynos/Vulkan)
    • UI rendering/optimization (HTML-based)
    • CPU/GPU optimization (AMD Radeon/AMD RDNA2+/NVIDIA/PS5/PS5 Pro)
  • Game Engine Engineering Intern - Pearl Abyss - (Jul 2022 - Aug 2022)
    • Rendering pipeline optimization
    • Deferred rendering
    • Tiles/clustered rendering
  • Undergraduate Researcher - MLVC - (Jan 2021 - Aug 2021)
    • My research focus was on the use of deep learning in games
    • Participated in CVPR-NAS 2021 with PhD candidate Tam Linh Tran
  • Android Programmer - Social Radio Company - (Sep 2020 - Feb 2021)
    • Technical QA
    • Search front-end
    • WebRTC integration
    • Social media integration
  • Intel Analyst - 2502 DLD - (Sep 2018 - Mar 2020)
    • KATUSA (Korean Augmented To the US Army)
    • Senior KATUSA (NCOIC of all KATUSAs in 2502 DLD)
    • Served as the main liaison between the USFK and the 2nd Operational Command, which is the 3rd highest ranking command in ROKA(Republic of Korea Army) next to the ROKA Headquarters and Ground Operations Command.

Education

  • BSc in Software Convergence - Kyung Hee University (Graduated: 2023)
    • GPA: 3.798 / 4.3
    • Awards: Scholarship for Outstanding Grades (5th semester, 7th semester)
    • Relevant Courses: Game Graphics Programming

Professional Projects

Personal Projects & Research

  • Farming Horror Game in Unreal Engine 5 (Game Jam Team Project, 2025)
    • Primary goal is to familiarize myself with UE5 and its GAS system
  • 2D Tile-Based Platformer Puzzle Game in Unity 6 (Side Project, 2024)
    • Used URP to create a greyscale world where the player has to bring back colors to the world
    • Used compute shader to create a 3D color distance field to mask the materials rendered
  • 2D Tile-Based Topdown Adventure Game in Unity 5 (Side Project, 2024)
    • Developed dialogue systems, combat AI systems, URP, cooking systems
  • Direct3D 12/Vulkan Based Renderer (Side Project, 2023 - Present)
    • Off-work project
    • Minimal use of standard libraries
    • Current focus is on creating Vulkan real-time path tracer
    • The goal is to implement state-of-the-art path tracing technologies (ReSTIR, etc.)
  • NES Emulator (Side Project, 2023 - Present)
  • Screen Space ReSTIR GI (Graduation Project, 2022)
    • My attempt at trying to implement ReSTIR GI
  • Renderer Pipeline Optimization Studies (Intern Project, 2022)
    • Implemented some famous renderer pipeline optimization techniques such as deferred rendering, tiled/clustered lighting
  • Simple Ray Tracer (Side Project, 2022)
    • Used as a lab assignment for game graphics programming course
    • Based on Peter Shirley’s Ray Tracing in One Week
    • Implemented with C++20 modules
  • SPH in Unreal 4 (School Project, 2022)
    • SPH using CUDA in UE4 in interactive rates
  • Pygame-Based Game Engine (School Project, 2021)
    • Developed a game engine using pygame to develop a clone to The Legend of Zelda: A Link to the Past
  • Direct3D 11 Based Renderer (Side Project, 2021 - 2022)
    • Used as the lab project for Kyung Hee University’s Game Graphics Programming course
    • I designed the entire lab exercises and projects
    • Designed to teach basics of graphics programming from initializing DirectX APIs to rendering animations and shadow maps.

Certifications & Courses