Roman Yurchak - Founder at Symerio

Roman Yurchak

Founder at Symerio

Paris, Ile-de-France

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Summary

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Roman Yurchak is a founder and ML engineer with 14 years of experience building production ML/AI systems and developer tooling from Paris, combining deep academic training (PhD in Physics from École Polytechnique) with hands-on startup leadership. He co-founded Symerio and now leads Akkel, delivering predictive modeling, NLP and information-retrieval products for clients like Saint-Gobain and Crédit Agricole while staying active in core open-source projects. As a core contributor to scikit-learn and Pyodide and a frequent maintainer across numerical and scientific stacks (NumPy, SciPy, pandas, matplotlib), he focuses on test reliability, build efficiency and memory/performance optimizations. His work on high-profile repos such as Emscripten and Pyodide shows an unusual cross-cutting skillset spanning ML, browser-based Python via WebAssembly, and low-level build tooling. Colleagues rely on him for pragmatic refactors and robust testing practices that reduce complexity and improve maintainability at scale.

14 years of coding experience

ENS Paris-Saclay

Doctor of Philosophy (PhD), Physics, Doctor of Philosophy (PhD), Physics at Ecole polytechnique

Master of Science (M.Sc.), Plasma Physics, Master of Science (M.Sc.), Plasma Physics at Université Paris-Saclay

English, French, Ukrainian

Stackoverflow

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11,055reputation

1.5mreached

203answers

15questions

Badges

conda

top-5%

numpy

top-1%

google-maps

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scipy

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python

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cython

top-5%

Github Skills (65)

python10

optimizers10

testing10

deep-learning10

build-automation10

cython10

numerical-optimization10

optimization10

javascript10

webdriver10

scikit10

pandas10

plot10

numpy10

optimisation10

Programming languages (23)

MDXPowerShellJavaC++CSSRustCTeX

Github contributions (5)

GeoStat-Framework/PyKrige

Apr 2015 - May 2020

Kriging Toolkit for Python

Role in this project:

Back-end Developer / Data Scientist

Contributions:80 commits, 47 PRs, 41 pushes in 5 years 2 months

Contributions summary:Roman focused on optimizing the performance of the core kriging implementation within the `pykrige/uk.py` file, specifically the `UniversalKriging` class. Their contributions involved refactoring and optimizing the code to improve performance, as well as adding comments and tests for the code. Furthermore, the user partially implemented the `UniversalKriging` class in Cython for performance improvements.

smoothingpythonspatial-analysisgeostatisticssplines

pyodide/pyodide

Jul 2018 - Jan 2023

Pyodide is a Python distribution for the browser and Node.js based on WebAssembly

Role in this project:

QA Engineer / Test Automation Engineer

Contributions:1 release, 1519 reviews, 436 commits in 4 years 6 months

Contributions summary:Roman's contributions primarily focused on enhancing the testing infrastructure and test coverage for the pyodide/pyodide project. They introduced new tests, addressed test failures, modified existing tests, and improved the reliability of the testing framework by implementing a mechanism for handling and marking known failures in tests. They also made changes to address compatibility issues with different browsers during testing, caching tests at the module level and improving the test reports.

pythonbrowsernode-jspyodidewebassembly

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