Paul Roujansky is an Applied AI Engineer based in Paris with nine years of hands-on experience building ML and MLE systems for medical and neuroscience applications. He has led data science and ML engineering teams at BioSerenity and Zoī, designing cloud platforms and a company-wide medical ontology to productionize physiological AI workflows. His background spans research-grade BCI work at ENS and NextMind to enterprise-grade AWS/GCP architectures, bringing both algorithmic depth and production rigor. An active contributor to the mne-python project, he has improved EDF file handling and annotation integrity for a widely used EEG/MEG library—reflecting a practical focus on data fidelity. Earlier experience in quantitative trading and actuarial studies gives him a strong foundation in probabilistic modeling and high-stakes production impact.
9 years of coding experience
8 years of employment as a software developer
Licence Économie-gestion, Licence Économie-gestion at Université Jean Monnet Saint-Etienne
Engineer's degree Ingénieur Civil des Mines Engineering Applied Mathematics Statistics Industrial Management IT, Engineer's degree Ingénieur Civil des Mines Engineering Applied Mathematics Statistics Industrial Management IT at École des Mines de Saint-Étienne
Master 2 (M2) Data Sciences - Machine Learning Big Data Computing & Analytics, Master 2 (M2) Data Sciences - Machine Learning Big Data Computing & Analytics at Université Paris-Saclay
Actuarial Mathematics Finance, Actuarial Mathematics Finance at Institut de Science Financière et d'Assurances (I.S.F.A)
MNE: Magnetoencephalography (MEG) and Electroencephalography (EEG) in Python
Role in this project:
Back-end Developer & QA Engineer
Contributions:12 reviews, 1 commit, 5 PRs in 1 day
Contributions summary:Paul primarily contributed to the `mne-python` repository by implementing features related to EDF file handling, particularly focusing on annotations and subject information. They addressed bugs in how subject information is loaded from and exported to EDF files, including handling channel-specific information. Furthermore, the user implemented changes to the handling of annotations and resolved an issue related to channel information for missing channels. These changes involved modifications across multiple files, demonstrating a focus on core functionality and data integrity related to the reading, processing, and exporting of EEG/MEG data.
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Paul Roujansky - Applied AI Engineer at Mistral AI