Joosep Pata
Senior Researcher at NICPB / Keemilise ja Bioloogilise Füüsika Instituut (KBFI)
Tallinn, Harju County, Estonia
Summary
🤩
Rockstar🎓
Top SchoolJoosep Pata is a senior researcher and ML/AI engineer with 12 years of experience building high-performance data processing and machine learning pipelines for particle physics and beyond. He blends deep domain knowledge from a PhD-winning career at ETH Zurich and hands-on systems work at CERN and Caltech, designing distributed, production-grade workflows that handle multi-terabyte LHC datasets. Practically fluent in profiling and optimization, he has contributed to flagship CERN software like CMSSW and automated profiling tooling to squeeze performance out of large-scale scientific code. Comfortable across research and engineering, he also mentors teams in ML, DevOps and SRE practices and has transitioned physics-grade algorithms into industry-standard ML toolchains. Based in Tallinn, he brings a rare mix of theoretical physics insight and pragmatic software craftsmanship that enables impactful, production-ready science.
12 years of coding experience
9 years of employment as a software developer
Erasmus studies, Nuclear Engineering, Erasmus studies, Nuclear Engineering at KTH Royal Institute of TechnologyDoctor of Philosophy (Ph.D.), Particle Physics, ETH Medal for Outstanding Doctoral Thesis, Doctor of Philosophy (Ph.D.), Particle Physics, ETH Medal for Outstanding Doctoral Thesis at ETH ZürichMaster's Degree, Physics (Field Theory), 4.94/5.0 (cum laude), Master's Degree, Physics (Field Theory), 4.94/5.0 (cum laude) at University of Tartu
Stackoverflow
11reputation
107reached
1answer
0questions
Github Skills (25)
cms10
c-language10
performance-analytics10
performance-monitor10
code-profiling10
bash10
offline-web-app10
offline-app10
script10
workflow-automation10
performance-analysis10
cplus10
profiling10
cpp10
performance-monitoring10
Programming languages (11)
Github contributions (5)
cms-sw/cmssw
Dec 2013 - Aug 2022
CMS Offline Software
Role in this project:
Back-end Developer
Back-end DeveloperContributions:510 reviews, 113 commits, 30 PRs in 8 years 9 months
Contributions summary:Joosep primarily focused on optimizing and refactoring code within the `PFDisplacedVertexCandidateFinder` class, a component of the CMS Offline Software. Their contributions include optimizing a linking function, refactoring code for better organization, and renaming variables to improve clarity. Additionally, the user made changes related to `KinematicTables.h` and `PFCandidate.h`, indicating involvement in data structure and potentially physics-related calculations within the CMS software.
cmshepcerncms-experimentc-plus-plus
cms-sw/cms-bot
Oct 2020 - Sep 2022
A few scripts to automate approval / testing process
Role in this project:Performance Engineer
Performance EngineerContributions:1 review, 37 commits, 14 PRs in 1 year 10 months
Contributions summary:Joosep primarily contributed to the performance profiling and analysis of a workflow within the repository. Their work involved creating scripts and modifying existing ones to integrate various profiling tools, including IgProf, TimeMemoryInfo, and FastTimer. These tools were used to collect detailed performance metrics, such as CPU usage, memory allocation, and execution time, across different stages of the workflow. The modifications indicate an effort to refine and automate the profiling process for improved efficiency and accuracy.
testing
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