James Helferty
Ottawa, Ontario, Canada
Summary
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RockstarJames Helferty is a graphics software engineer with nine years of focused experience building and maintaining GPU drivers and shading stacks, currently contributing to mobile 3D graphics at NVIDIA. He brings deep low-level expertise in C, Python, Vulkan, OpenGL, Direct3D, GLSL and assembly-level shading languages, with practical debugging skills using GDB. His background includes leading graphics teams and shipping compatibility layers and dynamic shader solutions for game portability at TransGaming, where he implemented a novel Direct3D9 fixed-function pixel pipeline via generated SM2 bytecode. Comfortable in safety-regulated contexts, he has exposure to ISO 26262 and Automotive SPICE, making him a fit for automotive graphics projects. Based in Ottawa, he pairs long-standing hands-on driver work with recent contributions to Slang, indicating an interest in modern shading language tooling. He prefers targeted outreach and ignores unsolicited recruiter messages.
9 years of coding experience
Github Skills (16)
cuda10
vulkan10
hlsl10
glsl10
hardware-interface10
opengl9
visual-studio-code-extension9
opengl-es9
python7
visual-studio-extension5
pytorch5
webgl4
linux-kernel2
bsp2
jetson1
Programming languages (6)
Github contributions (5)
jhelferty-nv/slang
May 2025 - Jun 2026
Making it easier to work with shaders
Contributions:5 PRs, 150 pushes, 38 branches in 1 year 1 month
jhelferty-nv/slangpy
Jun 2025 - Jun 2026
Contributions:29 pushes, 14 branches in 11 months
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