Grégory Hammad
Research Scientist at CyclotronResearchCentre
Liège, Liège, Belgium
Summary
👤
Senior🎓
Top SchoolGrégory Hammad is a research scientist and data practitioner with about a decade of experience turning petabyte-scale physics and medical imaging datasets into actionable insights, honed during a PhD and postdoctoral work on CMS at CERN and subsequent roles in data science. He builds robust analysis pipelines, statistical models and ML algorithms—often inventing bespoke background estimation and neural-network techniques—to extract rare signals from noisy collision data. His background spans C++ toolkits for particle physics, medical image processing stacks (SPM, FreeSurfer, FSL) and production data workflows, reflecting an ability to move models from research into operational systems. Based in Liège, he now focuses on Big Data analysis beyond academia, blending deep domain expertise in experimental physics with practical software engineering for high-throughput environments. An understated strength is his experience optimizing resource-constrained monitoring systems (memory/CPU profiling) for large-scale scientific instruments, which informs pragmatic, performance-aware solutions.
10 years of coding experience
12 years of employment as a software developer
CPGE, PCSI, CPGE, PCSI at Lycée Jacques DecourEngineer’s Degree, Physics and modelling, Engineer’s Degree, Physics and modelling at Université de StrasbourgCPGE, PC, CPGE, PC at Lycée CondorcetDoctor of Philosophy (Ph.D.), Elementary Particle Physics, Doctor of Philosophy (Ph.D.), Elementary Particle Physics at Université libre de BruxellesBAC, S, BAC, S at Lycée Paul LapieMaster’s Degree, Subatomic and astroparticle physics, Master’s Degree, Subatomic and astroparticle physics at University of Strasbourg
French, English, German
Github Skills (58)
python10
open-source10
data-analysis10
probability9
probabilistic-graphical-models9
activity-tracker9
accelerometer9
mri8
probabilistic8
probabilistic-models8
statsmodels8
pytorch7
parallel7
machine-learning7
health7
Programming languages (3)
Github contributions (5)
ghammad/pyActigraphy
Aug 2018 - Jan 2023
Python-based open source package for actigraphy data analysis
Contributions:9 releases, 12 reviews, 701 commits in 4 years 5 months
data-analysispythonactigraphycircadianrest-activity-rhythms
Metadata4Wearables/Metadata4Wearables-Schema
Mar 2021 - Feb 2022
Repository for the schemas implementing the Chronobiology Data Standards
Contributions:1 release, 45 commits, 10 PRs in 11 months
data-standardsjson-ldstandardsschema-validationmetadata-management
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