Jefferson Amstutz
Senior Developer Technology Engineer at NVIDIA
Austin, Texas, United States
Summary
🤩
Rockstar🎓
Top SchoolJefferson Amstutz is a senior developer technology engineer with 11 years of experience specializing in CPU/GPU ray tracing and high-performance visualization. Currently at NVIDIA in Austin, he leads work on rendering technologies and chairs the Khronos ANARI working group, having previously been the inaugural ANARI specification editor at Intel. His contributions to open-source projects like Embree and OSPRay demonstrate deep C++ and build-system expertise, including platform-specific optimizations and cross-compiler support. Jefferson blends research-grade technical leadership with hands-on engineering—driving oneAPI rendering efforts at Intel and solving real-world HPC visualization challenges earlier in his career. He is comfortable bridging standards, vendor implementations, and application needs to make advanced rendering accessible across platforms. An often-overlooked strength is his knack for build- and configuration-level fixes that materially improve portability and long-term maintainability of core rendering kernels.
11 years of coding experience
9 years of employment as a software developer
BS, Computer Science, BS, Computer Science at Grove City College
Github Skills (10)
compiler10
raytracing10
build-system10
c-language10
cmake10
cprogramming-language10
compile10
compiler-options10
sse9
optimization8
Programming languages (7)
Github contributions (5)
RenderKit/embree
Sep 2015 - Jan 2020
Embree ray tracing kernels repository.
Role in this project:
Backend Developer
Backend DeveloperContributions:11 commits, 3 PRs, 6 pushes in 4 years 4 months
Contributions summary:Jefferson's contributions primarily focus on improving the build and configuration process for the Embree ray tracing kernels. This includes automatically detecting compilers on Unix systems and modifying CMake files to support different compilers (ICC, Clang, and GCC) and architectures. The user also worked on allowing applications to use packaged TBB releases and fixing compiler warnings, demonstrating proficiency in build system configuration and C++ code maintenance. Furthermore, the user addressed issues related to SSE4.2 code generation on Cray systems, highlighting an understanding of platform-specific optimizations.
embreeraytracing
jeffamstutz/VisRTX
Apr 2019 - Apr 2026
NVIDIA RTX based implementation of ANARI
Contributions:24 pushes, 3 branches in 7 years 1 month
nvidiartx
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