Stefan Seefeld - Lead Software Engineer at Boost C++ Libraries

Stefan Seefeld

Lead Software Engineer at Boost C++ Libraries

Montreal, Quebec, Canada

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Summary

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Stefan Seefeld is a Lead Software Engineer in Montreal with 26 years of experience building system-level, scientific, and performance-sensitive software across industry and the Free Software community. He blends deep C++ metaprogramming and HPC expertise (CUDA, OpenMP, MPI, SIMD) with hands-on work in Python ecosystems—contributing to major projects like Boost, Numba and Conda—to bridge low-level performance and high-level developer usability. At Think Surgical he leads engineering efforts while maintaining long-term stewardship of Boost libraries (Python, GIL, uBLAS), evidencing both product delivery and open-source maintenance at scale. He has a strong track record in benchmarking, test automation, and domain-specific modeling, and he routinely mentors developers and coordinates cross-functional releases. Notably, his open-source contributions include embedding Python into C++ and CUDA device-level features, showing a rare mix of systems programming and scientific computing fluency.

26 years of coding experience

12 years of employment as a software developer

Biophysics, Biophysics at Université de Montréal

M.Sc., Theoretical Physics, M.Sc., Theoretical Physics at Humboldt-Universität zu Berlin

German, English, French

Stackoverflow

Stats

51reputation

124reached

0answers

1question

Github Skills (46)

opencl10

benchmark10

c-language10

strings10

matrix10

pytest10

python10

image-processing10

package-management10

llvm10

testing10

text-manipulation10

pandas10

conda10

benchmarking10

Programming languages (13)

C++CGoHTMLXSLTBitBakeJupyter NotebookTypeScript

Github contributions (5)

boostorg/python

Aug 2005 - Nov 2022

Boost.org python module

Role in this project:

Back-end Developer

Contributions:9 reviews, 215 commits, 142 PRs in 17 years 6 months

Contributions summary:Stefan contributed to the `boostorg/python` repository, which is a Boost.org python module, by adding and improving support for embedding Python within C++. They implemented basic embedding support, including functionalities for running Python code from within C++ and accessing Python objects. The user also made bug fixes and enhanced existing tests, demonstrating their involvement in the core functionality and maintenance of the module. Furthermore, they added examples to the documentation.

pythoncffimetaprogrammingpython-moduleboost

boostorg/gil

Jun 2017 - Oct 2019

Boost.GIL - Generic Image Library | Requires C++14 since Boost 1.80

Role in this project:

Backend & Test Engineer

Contributions:61 commits, 33 PRs, 429 pushes in 2 years 4 months

Contributions summary:Stefan primarily contributed to the testing and maintenance aspects of the Boost.GIL library. Their work involved fixing warnings and compiler issues, improving the portability of test paths, and splitting tests into separate executables. They also implemented actual I/O operations during testing and conditionalized png tags based on libpng API changes. These contributions helped improve the quality and functionality of the image processing library.

imagecpprasterimage-librarygil

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