In development Kóoch
A GPU-driven game engine in Rust, with Nanite-style meshlet rendering.
- Rust
- wgpu
- GPU-driven rendering
- Meshlets
- +3
9+ years shipping games & real-time systems
Matias Galarza Fernandez
Senior Game Developer · Lead Programmer
Multiplayer · VR/XR · Cross-Platform Tooling · AI Integration
About
From concept to product, with industry rigor.
Senior software engineer with 9+ years building real-time systems where performance is a hard requirement — game engines, rendering technology, multiplayer, and the AI that runs inside them. Most recently Senior Multiplayer Developer at 3dar, an Argentine studio with AAA cinematic and HBO immersive credits, where I co-owned the multi-platform ports and the online backend of Eggscape, an award-winning multiplayer VR title. On my own time I build Kóoch, a GPU-driven game engine in Rust with a Nanite-style meshlet renderer, and Elal, a local-first AI coding agent that runs quantized models on-device. A strong advocate of clean architecture, SOLID principles, measurable performance, and production-grade code — comfortable leading prototypes from concept to shippable product.
- 9+ years shipping
- 5 edu titles shipped
- 4 open-source tools
- VR multiplayer @ 3dar
Experience
Track record
- Mar 2024 – Jul 2026
Senior Multiplayer Developer
3dar Argentina (Remote)
- Worked on Eggscape, an award-winning Unity 6 multiplayer VR title, live in Early Access on Meta Quest since December 2024, for a studio with AAA cinematic and HBO immersive credits.
- Co-owned the porting of the title across Meta Quest, Android XR, Android mobile and Steam, on a pure-OpenXR architecture that keeps vendor-specific APIs behind a strategy layer, plus a package-profile build system that swaps packages, native plugins and manifests per target.
- Built deterministic real-time multiplayer with Photon Quantum for Unity (ECS with rollback), with custom networking over WebSocket, TCP and mDNS.
- Built the title's Node.js / TypeScript backend: authentication, accounts and sessions, plus matchmaking, lobby and match-state services.
- Optimized performance and thermal budgets across standalone headsets and mobile hardware to sustain target frame rates.
- Sep 2017 – Jan 2024
Co-Founder, Lead Programmer & Game Developer
DIGI Learnnials Argentina
- Co-founded an EdTech game studio and led engineering on five shipped educational titles.
- Built gameplay prototypes across diverse mechanics, researching and integrating new technologies including multiplayer and API connectivity.
- Authored readable, scalable, production-grade code following SOLID principles, design patterns and clean architecture.
- Created internal tools that accelerated project development across the team.
- Mar 2017 – Present
Founder & Software Engineer
Lobinux Argentina
- Independent engineering practice. Currently building engine, graphics and systems software in Rust and C++, all of it open source and publicly verifiable.
- Kóoch, a GPU-driven engine in Rust with a meshlet renderer, and Elal, a local-first AI coding agent running quantized models on-device.
- Earlier (2017–2019): contract development of video games and immersive VR experiences for mobile platforms and on-site event installations.
Selected Projects
Open-source tools, games & experiments
In development 
In production 
In production yaguarete_os
An immutable KDE distribution built on Bazzite, for development and gaming.
- Fedora Atomic
- Bazzite
- bootc
- OCI
- +2
Beta OhMyDialogSystem
Engine tooling: a local LLM inference runtime embedded in Godot 4.
- Godot 4
- C++
- GDExtension
- llama.cpp
- +1
Beta Elal
A local-first AI coding agent in Rust, with the inference engine inside the binary.
- Rust
- llama-cpp-2
- GGUF
- Tool calling
- +2
Technical Skills
The stack
Game Engines
- Unity (C#, C++)
- Unreal Engine (C++)
- Godot 4 (GDScript, C++ GDExtension)
Languages
- C#
- C++
- Rust
- GDScript
- Python
- .NET / .NET Core
- JavaScript / TypeScript
Multiplayer & Networking
- Photon Quantum (ECS, deterministic sim)
- WebSocket
- TCP
- mDNS
- Custom protocols
- .NET Core game servers
VR / XR
- OpenXR (vendor-neutral architecture)
- Meta Quest
- Android XR
- PICO
- Meta XR SDK
- Unity XR / AR Foundation
- Immersive interaction design
- Performance & thermal optimization
Graphics & GPU
- GPU-driven rendering
- Nanite-style meshlet pipelines
- Visibility buffer & deferred shading
- Hi-Z occlusion culling
- GPU compute (Vulkan, wgpu)
- Frame-time profiling & optimization
Backend & Online Services
- Node.js / TypeScript services
- Auth, accounts & sessions
- Matchmaking & lobby services
- REST APIs
- Prisma
- Render, Cloudflare
Cross-Platform Tooling
- Rust + Tauri 2 desktop apps
- Decky Loader (Steam Deck) plugins
- SolidJS
AI Integration
- Local LLM inference (llama.cpp via C++ GDExtension)
- Prompt engineering for NPC dialogue
- Generative AI
Platforms
- Steam Deck
- Linux handhelds
- Windows
- Android / mobile
- VR headsets
Practices & Tools
- SOLID
- Design patterns
- Clean architecture
- Git
- Agile
- Gameplay prototyping
- Developer tooling
Linux
- Maintainer of a custom Fedora Atomic / Bazzite-based distribution (yaguarete_os)
- bootc / OCI image builds
- Shell scripting & build automation
- CI/CD (GitHub Actions, matrix builds)
- Server administration (Ubuntu, Fedora)
- Virtual machines (QEMU/KVM)
Education & Certifications
Education & credentials
Education
-
Higher Technical Degree in Video Game Development
-
Junior Programmer — Game Design & Interactive Content
-
Image & Sound Design (Visual Design & Communication)
Certifications
- Unreal 5.0 C++ Developer: Learn C++ and Make Video Games
- Become a C++ Developer
- Learn C#
- C++: Smart Pointers
- Essential Foundations of Programming
Languages
- Spanish Native
- English Daily written use; conversational spoken
Contact
Let's build something great together.
Greater Buenos Aires, Argentina (UTC-3)