Mateusz Kowalczyk
Co-Founder at genoomy.com
Germany
Summary
🤩
Rockstar🎓
Top SchoolMateusz Kowalczyk is a seasoned founder and software engineer with 13 years of experience building products at the intersection of biomedical engineering, blockchain, and infrastructure. Based in Germany, he co-founded multiple ventures (including Ogen and genoomy.com) and led engineering efforts such as developing an exchange platform at bitstar.pl. A pragmatic full-stack contributor to notable open-source projects, he has improved UX in the popular Clementine music player and fixed complex build and packaging issues across the Haskell ecosystem (cabal2nix, stack, GHC). His background blends deep systems and DevOps skills—connecting supercomputing infrastructure to CERN—with formal training in biomedical and computer engineering and diverse studies from chaos theory to radiation physics. Comfortable moving between low-level build tooling and user-facing UI work, he brings a rare combination of academic breadth and hands-on product delivery. An understated detail: his contributions often focus on hard, behind-the-scenes fixes (build chains, documentation, testing) that materially improve developer and user experience.
13 years of coding experience
2 years of employment as a software developer
student, Econophysics, student, Econophysics at University of WarsawChaos theory, Chaos theory at Ecole Nationale des Ponts et ChausséesEngineer's degree, Biomedical/Medical Engineering, Engineer's degree, Biomedical/Medical Engineering at Warsaw University of TechnologyIntroduction to nuclear energy, Introduction to nuclear energy at Universidad Politécnica de MadridApplication of Ionizing Radiation, Application of Ionizing Radiation at Czech Technical University in PragueRadiation Physics and Environment, Radiation Physics and Environment at Istanbul Technical UniversityProgramming Language Fundamentals, Programming Language Fundamentals at York University
English, Polish, German
Github Skills (34)
dependency-management10
parser10
c-language10
qt10
nix10
ui-design10
uid10
front-end-development10
build-automation10
cabal10
software-packaging10
cprogramming-language10
haskell10
documentation10
testing9
Programming languages (25)
Github contributions (5)
NixOS/cabal2nix
Aug 2014 - Aug 2017
Generate Nix build instructions from a Cabal file
Role in this project:
Backend Developer & DevOps Engineer
Backend Developer & DevOps EngineerContributions:13 commits, 2 PRs, 8 comments in 3 years
Contributions summary:Mateusz primarily contributed to the `cabal2nix` project by modifying build processes and dependency management within Haskell code. Their work involved fixing compilation issues related to external libraries like `lapack` and `libsodium`, and adjusting how dependencies are handled. They also addressed issues with testing and integration, modifying build tools, and improving how the project interacts with Nix and Cabal. Furthermore, the user improved the build process by addressing haddock-related issues, which improve documentation generation within Nix, and dealing with various post-processing steps in the build chain, optimizing the project's packaging for Nix.
nix-buildcabal2nixinstructionscabalhaskell
commercialhaskell/stack
Jul 2015 - Apr 2017
The Haskell Tool Stack
Role in this project:Back-end Developer
Back-end DeveloperContributions:5 commits, 5 PRs, 28 comments in 1 year 8 months
Contributions summary:Mateusz made several contributions to the Haskell Tool Stack project, primarily focused on improving build and deployment processes. Their work included fixing a file permissions issue during package unpacking, enhancing the Docker integration by trimming the output of the `--version` command, and adding functionality to the upgrade process to include a `--git-repo` option. Additionally, they addressed a bug related to haddock arguments and made improvements to the haddock generation.
haskellservant
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