Liam Middlebrook
Senior System Software Engineer at NVIDIA
Mountain View, California, United States
Summary
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Rockstar🎓
Top SchoolLiam Middlebrook is a Senior System Software Engineer with 12 years of experience building high-performance graphics and systems software, currently working on AI-for-gaming frameworks at NVIDIA in Mountain View. He blends deep systems and graphics expertise—contributing to high-profile open-source projects like DXVK and NVIDIA’s Quake II RTX—with hands-on kernel- and driver-level problem solving that has fixed real-world NVIDIA driver bugs. A former sysadmin and long-time contributor to Computer Science House, he brings practical operational instincts to large-scale engineering problems. His background in game and interactive media design gives him a unique perspective on optimizing pipelines for real-time rendering and developer tooling.
12 years of coding experience
Bachelor of Science (BS), Game and Interactive Media Design, Bachelor of Science (BS), Game and Interactive Media Design at Rochester Institute of Technology
Github Skills (27)
debugging10
vulkan10
debug10
c-language10
shader10
compilation10
apidoc10
linux10
c1110
shaderc10
c1710
api10
direct3d10
performance-optimization10
graphics-programming10
Programming languages (23)
Github contributions (5)
NVIDIA/Q2RTX
Jun 2019 - Jan 2021
NVIDIA’s implementation of RTX ray-tracing in Quake II
Role in this project:
Game Developer / Systems Programmer
Game Developer / Systems ProgrammerContributions:2 reviews, 8 commits, 5 comments in 1 year 7 months
Contributions summary:Liam primarily focuses on improving the functionality and performance of the Quake II RTX implementation. Their contributions include fixing file search paths for content loading, updating the script used for copying game assets, disabling the Steam overlay to mitigate stuttering, and increasing the precision of FPS output during timedemos. Additionally, they integrated the glslangValidator using a submodule, streamlining the build process.
raynvidiartxtracingray-tracing
doitsujin/dxvk
Apr 2019 - Mar 2022
Vulkan-based implementation of D3D8, 9, 10 and 11 for Linux / Wine
Role in this project:Back-end Developer & System Architect
Back-end Developer & System ArchitectContributions:5 reviews, 11 commits, 8 PRs in 2 years 11 months
Contributions summary:Liam primarily contributed to the DirectX to Vulkan translation layer, focusing on core functionality and optimization. They implemented features related to specialization constant initialization and added debug logging for shader signatures. The user also added a string output function for DxbcRegMask and implemented support for debug utils labels, enhancing debugging capabilities within the project. Furthermore, the user addressed an Nvidia driver bug and added an environment variable for NVAPI configuration.
d3d9vulkanwinelinuxd3d11
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