RYU6Recomp
Rehosting a console binary as a native Windows application
A clean-room research project that runs a commercial console demo binary natively on PC, replaying its frames through a Vulkan renderer I wrote.
- C++
- Vulkan
- SPIR-V
- Ghidra
- RenderDoc
Munich, Germany
David Erik García Arenas
Software engineer — tools & 3D graphics pipelines
I build the tooling that keeps 3D pipelines honest. At a BMW supplier I designed and shipped my team's pre-delivery QA tool for vehicle-configuration data, and grew it to over 1,300 automated checks per release candidate. On my own time I reverse-engineer console renderers and write up what breaks.
Selected work
RGGFramework
A native C++ runtime and diagnostic overlay for Dragon Engine games
An experimental C++ framework for engine observability and pipeline debugging, built around a fail-safe DirectX 12 overlay.
- C++
- DirectX 12
- MinHook
- Dear ImGui
- CMake
QUANTUM Inspector
Diagnostic tooling for Android Automotive HMI QA
A Python desktop tool for inspecting in-vehicle infotainment UI at runtime — screen mirroring, hierarchy inspection and scoped locator generation.
- Python
- Qt
- ADB
- Maestro
- Android Automotive
OR.BIS
Real-time 3D audio visualiser
Live audio analysis driving generative geometry — FFT and loudness features mapped onto evolving 3D form for live and interactive contexts.
- Python
- Three.js
- CRIWARE ADX
- NumPy
- SciPy
HawaiiOS
A working Windows-style desktop in the browser
The shell this site is built on: live tiles, a window manager, and a WebGL city rendered behind acrylic chrome. Built to be used, not mocked up.
- TypeScript
- Preact
- Three.js
- Express
- SCSS
Also
Sonic 4 Ep. II Recomp
Reverse engineering Sonic the Hedgehog 4: Episode II's engine data
Format documentation and Python tooling for the AliceNN engine's data files — the groundwork for a portable re-implementation of the game.
- Python
- Reverse engineering
- File formats
Ryūga Sound Studio
Cross-platform audio extraction toolkit for CRIWARE formats
A toolkit for extracting and processing CRIWARE audio, built while researching how the format is used in shipped titles.
- C#
- CRIWARE
Ink & Soul
Full-stack booking and portfolio platform
The complete digital platform for a contemporary tattoo studio — portfolio, booking and payments — taken from concept through to deployment.
- React
- TypeScript
- Supabase
- Stripe
SWARD
Clean-room UI/UX research and development
Research into the interface and motion language of a well-known action game, rebuilt clean-room in C++.
- C++
- UI/UX
- Debugging tools
Experience
Paradox Cat GmbH — BMW supplier · Munich
Jan – Sep 2026
QA Engineer — 3D graphics pipeline · Apr – Sep 2026
- Designed and built the 3D graphics team's pre-delivery QA tool for BMW vehicle-configuration data: Python backend, web dashboard and a Qt (PySide6) desktop shell, shipped as a packaged Windows application and adopted by the team.
- Grew it to over 1,300 automated checks per release candidate — data consistency, scene-hierarchy validation, export integrity and coverage — catching real defects before delivery, including a numeric constants drift between source and exported data, and a duplicate paint-code identifier in shared data.
- Integrated the Ramses 3D engine toolchain, running headless scene export and checks inside automated QA runs.
Test automation — Android Automotive HMI · Jan – Mar 2026
- Built Maestro-based UI automation flows and performed runtime inspection with ADB and dumpsys for BMW in-vehicle infotainment validation, analysing selector robustness in a complex HMI.
- Developed QUANTUM Inspector, a Python/Qt proof of concept for screen mirroring, UI-hierarchy inspection and scoped locator generation, and co-presented an internal engineering talk on diagnostic tooling.
Outlier — freelance, remote
Nov 2024 – Jan 2026
AI output evaluator
- Evaluated language-model output against quality and safety criteria alongside full-time study.
Writing
The swapchain hazard my GPU forgave
A write-after-read synchronization bug in my Vulkan present path, found by a validation layer rather than by symptoms — why TOP_OF_PIPE as a source stage breaks the acquire-semaphore dependency chain.
July 2026
About
Skills
Languages
- C++ (C++17)
- Python
- TypeScript
- C#
- Java
- SQL
Graphics & 3D
- Vulkan
- SPIR-V
- DirectX 12
- RenderDoc
- Ramses
- glTF
- Three.js
- Blender
- Maya
Tools & frameworks
- Qt (PySide6)
- React
- FastAPI
- CMake
- Maestro
- Docker
- Git
- SVN
Practice
- Test automation
- Runtime diagnostics
- Windows packaging
- Code review
- CI/CD
Education
- Técnico Superior — Desarrollo de Aplicaciones Web (DAW)
IES Francisco Ayala, Spain · completed 2026 - Técnico Superior — Desarrollo de Aplicaciones Multiplataforma (DAM)
MEDAC, Spain · 2023 – 2025 - Técnico — Microcomputer Systems & Networks
Instituto Tecnológico Granada · 2021 – 2023
Certifications
- Foundations of Software Testing — University of Leeds
- Google UX Design Professional Certificate
- Agile with Atlassian Jira
- Máster Online en IA e Innovación — Founderz
Languages
- Spanish — native
- English — C1 (Cambridge CAE)
- German — A1, actively learning