Alexander Grayver
Heisenberg Research Fellow at University of Cologne
Germany
Summary
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Rockstar🎓
Top SchoolAlexander Grayver is a geophysicist and computational scientist with 11 years of experience advancing geophysical imaging, geomagnetism, and planetary remote sensing, currently a Heisenberg Research Fellow at the University of Cologne. He combines state-of-the-art numerical methods and data analysis with ground, airborne, and space observations to probe crust-to-core processes and planetary interiors. His academic trajectory includes a PhD in Geophysics and research positions at ETH Zürich and GFZ-Potsdam, reflecting deep expertise in both theory and applied observation. An active open-source contributor, he has fixed subtle numerical bugs and added robust tests to flagship finite-element libraries like deal.II and MFEM, demonstrating hands-on skill with C++ numerical linear algebra and complex-valued operator conventions. Colleagues describe him as interdisciplinary and curious, motivated by collaborative problem-solving across domains.
11 years of coding experience
14 years of employment as a software developer
Doctor of Philosophy - PhD, Geophysics, Doctor of Philosophy - PhD, Geophysics at Freie Universität BerlinPostgraduate Degree, Postgraduate Degree at ETH Zürich
German, English
Stackoverflow
382reputation
29kreached
2answers
3questions
Github Skills (19)
c-language10
sparse-matrix10
el10
f10
finite-element-analysis10
cprogramming-language10
linear-algebra10
computational-science9
testing9
hpc9
numerical-methods9
parallel-computing8
netcore6
angular6
entity-framework6
Programming languages (5)
Github contributions (5)
dealii/dealii
Aug 2014 - Jul 2021
The development repository for the deal.II finite element library
Role in this project:
Back-end Developer
Back-end DeveloperContributions:9 reviews, 84 commits, 40 PRs in 7 years
Contributions summary:Alexander contributed to bug fixes and implemented testing for the `deal.II` finite element library, specifically targeting issues related to projection of boundary values. These changes involved modifications to C++ code, correcting indexing errors within the `project_boundary_values_curl_conforming` function and adding associated test cases. The commits demonstrate expertise in finite element methods and related numerical techniques.
dealmultiphysicsc-plus-pluscomputational-sciencefinite-elements
mfem/mfem
Nov 2017 - Feb 2018
Lightweight, general, scalable C++ library for finite element methods
Role in this project:Back-end Developer
Back-end DeveloperContributions:9 commits, 3 PRs, 1 push in 3 months
Contributions summary:Alexander primarily contributed to refactoring and enhancing the `SparseMatrix` class within the MFEM library. They introduced an `enum` for `DiagonalPolicy`, replaced integer arguments, and fixed associated bugs within the diagonal handling logic. Furthermore, the user implemented support for two complex operator conventions, adding flexibility to the library's functionalities. These changes focused on improving the library's numerical linear algebra capabilities and its handling of complex-valued operators.
c-plus-plusfinitefemamrc-library
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