Paul Zehner
Research Engineer at CEA
Saclay, Ile-de-France
Summary
🤩
Rockstar🎓
Top SchoolPaul Zehner is a research engineer with eight years' experience specializing in CFD, numerical aeroacoustics and HPC, combining a PhD from Arts et Métiers/ONERA with engineering training from ENSEEIHT. He has led GPU acceleration and CPU optimization efforts—most recently at JAXA where he ported and optimized the FaSTAR CFD code on ARM GPUs and established CI for solver testing—bridging physics-first modeling with production-grade software practices. Comfortable across the research-to-production boundary, he focuses on code quality, non-regression and integration testing for scientific solvers in aeronautics, energy and sustainability domains. Based in Saclay, Paul uniquely pairs deep simulation expertise with hands-on performance engineering to shrink time-to-solution while keeping results verifiable and reproducible.
8 years of coding experience
5 years of employment as a software developer
Master's degree in Fluid dynamics Energetics and Transfers Fluid dynamics, Master's degree in Fluid dynamics Energetics and Transfers Fluid dynamics at Toulouse INPINP-ENSEEIHT Master's degree of engineering in Hydraulics and Fluid mechanics Hydraulics Fluid mechanics Computational fluid dynamics, INP-ENSEEIHT Master's degree of engineering in Hydraulics and Fluid mechanics Hydraulics Fluid mechanics Computational fluid dynamics at ENSEEIHTPhD of Sciences Aeroacoustics, PhD of Sciences Aeroacoustics at Arts et Métiers - École Nationale Supérieure d'Arts et MétiersPreparatory school's degree Physics and Industrial Sciences, Preparatory school's degree Physics and Industrial Sciences at Lycée Déodat de Séverac
French, English, Japanese, German
Stackoverflow
33reputation
243reached
0answers
3questions
Github Skills (78)
parallel10
abstraction10
parallel-computing10
cpp10
ecosystem10
cluster-computing10
parallel-execution10
parallel-processing10
upstream10
mpi10
portability10
cmake9
windows9
scientific-computing9
lists9
Programming languages (10)
Github contributions (5)
CExA-project/cexa-kokkos-tutorials
Dec 2024 - Feb 2025
CExA Kokkos Tutorials
Contributions:1 release, 9 reviews, 28 PRs in 2 months
CExA-project/cheat-sheet-for-kokkos
Mar 2024 - Apr 2025
Cheat sheets for the HPC C++ library Kokkos
Contributions:1 release, 26 reviews, 36 PRs in 1 year
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