Bastien Mussard
Software Engineer at MyScript®
Pays de la Loire, France
Summary
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Rockstar🎓
Top SchoolBastien Mussard is a software engineer with a decade of experience who brings a scientist’s rigor to production engineering at MyScript in Nantes. Trained as a theoretical chemist (PhD) and experienced in academic research roles at Sorbonne and Colorado Boulder, he specializes in designing scalable algorithms, optimizing core routines, and establishing CI and best practices for teams. He contributes to open-source scientific software—most notably extending the pyscf quantum chemistry library to handle complex reduced density matrix workflows and third-order calculations—bridging domain research and robust backend implementations. Comfortable leading small research teams and shipping user-friendly libraries, he excels at turning advanced numerical methods into maintainable code. Based in Pays de la Loire, he combines deep theoretical knowledge with pragmatic software craftsmanship in scientific and commercial contexts.
10 years of coding experience
5 years of employment as a software developer
Master's degree, Theoretical Chemistry, Master's degree, Theoretical Chemistry at Ecole normale supérieureDoctor of Philosophy - PhD, Theoretical Chemistry, Doctor of Philosophy - PhD, Theoretical Chemistry at Universite de LorraineMaster's degree, Theoretical Chemistry, Master's degree, Theoretical Chemistry at Sorbonne University
French, English
Stackoverflow
1reputation
0reached
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Github Skills (9)
algorithm10
algorithms10
quantum-chemistry10
numerical10
numerical-methods10
python10
numeric10
cprogramming-language9
fortran8
Programming languages (4)
Github contributions (5)
pyscf/pyscf
May 2017 - Jul 2018
Python module for quantum chemistry
Role in this project:
Back-end Developer
Back-end DeveloperContributions:9 commits, 7 pushes, 1 comment in 1 year 2 months
Contributions summary:Bastien primarily contributes to the `pyscf/pyscf` repository, which is a quantum chemistry module. Their commits focus on reading and processing 3- and 4-RDM (Reduced Density Matrix) data from files within the `icmpspt` directory. The code changes include modifications to the `icmpspt.py` and `icmpspt.c` files to handle RDM data, and also incorporate changes for integrating third-order calculations. The contributions suggest involvement in extending the library's capabilities for advanced quantum chemistry calculations.
pythonchemistryquantum-computingpython-modulequantum-chemistry
mussard/mussard.github.io
Apr 2017 - Mar 2020
Contributions:136 pushes, 1 branch in 2 years 11 months
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