Thomas Retornaz
Software Research And Development Engineer at i-Virtual
Rennes, Brittany, France
Summary
👤
Senior🎓
Top SchoolThomas Retornaz is a software R&D engineer with 11+ years designing and industrializing image-processing and machine learning solutions, from handwriting recognition and natural scene text localization to turnkey DNA microarray analysis. He combines low-level C/C++ and SIMD optimizations with modern Python and deep learning toolchains (PyTorch, ONNX, pybind11) to shrink model footprints and bridge research-to-production gaps. Experienced as a hands-on architect and former R&D manager, he has led small teams and delivered production SDKs for document and medical imaging at scale. Now at i-Virtual he extracts physiological signals from video using computer vision pipelines, demonstrating his knack for applying core imaging expertise to novel domains. He holds a PhD-level background in image processing and is particularly strong at recreating reproducible research workflows that perform reliably on constrained devices.
11 years of coding experience
20 years of employment as a software developer
PHD, Research engineer in image processing, PHD, Research engineer in image processing at Ecole nationale supérieure des Mines de ParisMasters of Science, Optic,Image Processing,Applied mathematics, Masters of Science, Optic,Image Processing,Applied mathematics at TELECOM Saint-EtienneDUT Mesures Physiques, Technique Instrumentale, DUT Mesures Physiques, Technique Instrumentale at IUT SaintEtienne
French, English
Github Skills (49)
pytorch10
ai-framework10
intrinsics10
python10
avx10
machine-learning10
mathematical10
accelerator10
raii10
onnx10
vectorization10
hardware-acceleration10
numpy10
keras10
deep-learning10
Programming languages (3)
Github contributions (5)
Auburn/libsimdpp
Feb 2018 - Oct 2018
Portable header-only C++ low level SIMD library
Contributions:14 commits in 8 months
simdcppheadersimd-libraryc-plus-plus
ThomasRetornaz/xsimd
Dec 2019 - Mar 2024
C++ wrappers for SIMD intrinsics and parallelized, optimized mathematical functions (SSE, AVX, NEON, AVX512)
Contributions:12 pushes, 1 branch in 4 years 3 months
avxsimdcppavx512simd-intrinsics
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