Ondřej Čertík

Los Alamos, NM · ondre-remove-j@certik.us

Principal Compiler Engineer at GSI Technology. Former scientist at Los Alamos National Laboratory.

Ondřej is the original author of SymPy, SymEngine and LFortran.

Email: ondrej@certik.us

Open Source Projects

Selected open source projects that I created. See my GitHub and GitLab profiles for other projects. Besides that I contributed to many other open source projects inluding Jupyter/IPython, Debian, SciPy, NumPy, SageMath, Spack and others.


SymPy is a Python library for symbolic mathematics.

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SymEngine is a fast symbolic manipulation library, written in C++

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LFortran is a modern open-source interactive Fortran compiler built on top of LLVM.

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Theoretical Physics Reference

Ab-initio derivations of physics equations that are needed for applications.

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Fortran 90 Webpage

Best practices for modern Fortran.

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Staff Scientist

Los Alamos National Laboratory

Computational Physics and Methods (CCS-2).

July 2014 - Present


Los Alamos National Laboratory

Development of electronic structure methods for warm dense matter.

April 2013 - July 2014

NumPy Release Manager

Continuum Analytics (now Anaconda)

Responsible for releasing NumPy 1.7.

June 2012 - April 2013


Lawrence Livermore National Laboratory

Development of electronic structure methods in atomic physics.

February 2011 - August 2011

Summer internship

Computational Chemistry and Materials Science Summer Institute at Lawrence Livermore National Laboratory

Comparison of High-Order, Adaptive Methods for Atomic Structure Calculations.

June 2010 - August 2010

Summer internship

Los Alamos National Laboratory

Development of methods for magnetohydrodynamics simulations.

June 2009 - August 2009

Summer internship

Space Telescope Science Institute

MCMC fitting of stellar evolution models to color-magnitude diagrams from M31 galaxy.

June 2006 - August 2006

Summer internship

Portland State University

Helping to develop free-access crystallographic database.

July 2005 - August 2005

Scientific assistant

Center for Machine Perception (CMP), Department of Cybernetics, Faculty of Electrical Engineering, Czech Technical University

Development of control software for robotics.

1999 - 2002


University of Nevada, Reno

Major: Chemical Physics
2009 - 2012

Faculty of Mathematics and Physics, Charles University, Czech Republic

Major: Theoretical Physics
Thesis: master.pdf
2006 - 2008

Faculty of Mathematics and Physics, Charles University, Czech Republic

Major: Physics
Thesis: bachelor.pdf
2003 - 2006

Gymnázium Christiana Dopplera, Czech Republic

High School
Major: Mathematics and Physics
1995 - 2003

See Blogs

Nifty tech tag lists from Wouter Beeftink