Sébastien Villemot
Economist at CEPREMAP
Paris, Ile-de-France
Summary
👤
Senior🎓
Top SchoolSébastien Villemot is an economist with 13 years of experience who bridges macroeconomic research and open-source scientific software development from Paris. He co-leads the Dynare project, translating complex DSGE modeling needs into robust simulation tools, and contributes to foundational numerical libraries like LAPACK and OpenBLAS to improve code quality and cross-platform compatibility. Trained at École normale supérieure and the Paris School of Economics (PhD), he combines rigorous mathematical and computational skills with practical policy-facing macroeconomic work at CEPREMAP and OFCE. A Debian developer as well, he pays attention to reproducibility and maintainability—evidenced by documentation fixes and test restorations in widely used linear algebra projects—making him as comfortable with Fortran and low-level debugging as with economic theory.
13 years of coding experience
Doctor of Philosophy (Ph.D.), Economics, Doctor of Philosophy (Ph.D.), Economics at Paris School of EconomicsMaster of Science (M.Sc.), Mathematics, Computer science, Economics, Master of Science (M.Sc.), Mathematics, Computer science, Economics at Ecole normale supérieureLycée Louis-le-Grand
French, English
Github Skills (9)
fortran10
blas10
lapack10
linear-algebra10
testing10
c119
c179
performance-optimization7
eigenvalue5
Programming languages (19)
Github contributions (5)
Reference-LAPACK/lapack
Jun 2016 - Nov 2022
LAPACK development repository
Role in this project:
Software Engineer (Focus on Code Maintenance/Quality)
Software Engineer (Focus on Code Maintenance/Quality)Contributions:8 commits, 7 PRs, 1 comment in 6 years 6 months
Contributions summary:Sébastien primarily contributed to fixing typos and improving the documentation within the LAPACK repository. They addressed minor errors across multiple source files, ensuring consistency and clarity in the code comments and descriptions. Additionally, the user fixed issues related to test functionalities. The overall impact of these changes is improved code quality, maintainability, and documentation accuracy for the LAPACK library.
eigenvalueslapacklapackelinear-algebrasingular-values
OpenMathLib/OpenBLAS
Nov 2012 - Sep 2017
OpenBLAS is an optimized BLAS library based on GotoBLAS2 1.13 BSD version.
Role in this project:Back-end Developer
Back-end DeveloperContributions:7 commits, 4 PRs, 33 comments in 4 years 11 months
Contributions summary:Sébastien primarily contributed to bug fixes and enhancements related to the OpenBLAS library's core functionality. They addressed compilation issues with specific targets, such as GENERIC and ZARCH, and resolved compatibility problems with QEMU guests and Athlon CPUs. Additionally, the user fixed CBLAS test issues by correcting logic in the testing code. Their work involved modifying Fortran code related to BLAS and LAPACK functionalities.
lapackopenblaslapackelinear-algebrabsd
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