Andrei Gheata
Senior Applied Physicist at CERN
Geneva, Geneva, Switzerland
Summary
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Rockstar🎓
Top SchoolAndrei Gheata is a Senior Applied Physicist with 16 years of experience modernizing detector simulation and geometry software at CERN, where he leads R&D in the SFT group. He has deep expertise in Monte Carlo frameworks and ROOT/ALICE geometry and navigation, contributing core backend fixes and features to widely used open-source projects like ROOT and AliRoot. His work spans from designing trigger and simulation frameworks to hands-on improvements in random number handling, tessellated shape import, and navigator robustness—areas that directly improve large-scale experimental analyses. Trained as a PhD physicist, he combines rigorous scientific insight with long-standing software engineering craftsmanship, including original instrumentation data-acquisition methods developed early in his career. Notably, his contributions reflect both low-level performance tuning and high-level framework design, making him effective at bridging simulation fidelity and production-scale usability.
16 years of coding experience
10 years of employment as a software developer
Highshool graduation diploma, mathematics/physics, Highshool graduation diploma, mathematics/physics at Lyceum Odobescu, PitestiMaster's degree, Applied Nuclear Physics, Master's degree, Applied Nuclear Physics at Faculty of Physics, Bucharest UniversityDoctor of Philosophy (PhD), Elementary Particle Physics, Doctor of Philosophy (PhD), Elementary Particle Physics at University of BucharestGenerala 3, Pitesti
English, French
Stackoverflow
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Github Skills (9)
alice10
root-view10
c-language10
physics10
geometry10
cprogramming-language10
document-root10
data-analysis9
cer7
Programming languages (6)
Github contributions (5)
root-project/root
Apr 2010 - Jan 2023
The official repository for ROOT: analyzing, storing and visualizing big data, scientifically
Role in this project:
Backend Developer
Backend DeveloperContributions:101 reviews, 507 commits, 202 PRs in 12 years 11 months
Contributions summary:Andrei primarily contributed to the geometry aspects of the ROOT project, focusing on implementing and fixing features related to geometric object handling and navigation. Their commits demonstrate improvements to core functionalities, such as fixing boundary crossing and optimizing navigator updates. They also worked on documentation and improvements related to how tessellated shapes were imported.
big-datadata-analysisroot-cernrootc-plus-plus
alisw/AliRoot
Dec 2013 - Jan 2015
ALICE Software Framework
Role in this project:Back-end Developer
Back-end DeveloperContributions:50 commits in 1 year 2 months
Contributions summary:Andrei primarily focused on fixing and improving the ALICE Software Framework. Their commits addressed issues related to random number generation, MC generator macro writing, and loading branches in PROOF. They also added data members related to generators and made various fixes for the MC generator analysis mode, demonstrating expertise in the framework's internal workings and analysis capabilities. The user also made updates to the merge and validation scripts.
physicscernframeworkalicealice-experiment
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