Sebastian Kalinowski
Senior Software Engineer at TMT Insights
Greater Poland Voivodeship
Summary
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Rockstar🎓
Top SchoolSebastian Kalinowski is a Senior Software Engineer with 14 years of experience, based in Greater Poland, specializing in Python and continuous integration. He has driven backend and CI/CD efforts across startups and scale-ups including TMT Insights, TIER Mobility, and Mirantis, where he contributed to OpenStack projects and system-level features. An active open-source maintainer, he has improved and released pydot — enhancing determinism, Windows/conda support, and documentation — demonstrating attention to cross-platform reliability and developer tooling. Comfortable leading small teams and coordinating client-facing work, he blends hands-on coding with release management and testing automation. Trained in bioinformatics, he brings a pragmatic, data-informed approach to problem solving that often surfaces in infrastructure and tooling improvements.
14 years of coding experience
12 years of employment as a software developer
BSc, Bioinformatics, BSc, Bioinformatics at Uniwersytet im. Adama Mickiewicza w Poznaniu
Stackoverflow
431reputation
20kreached
6answers
0questions
Github Skills (13)
python10
graphviz10
testing9
setuptools8
py8
documentation7
webargs6
python-sphinx6
flask-restful6
autodoc6
pytest6
marshmallow6
flask6
Programming languages (13)
Github contributions (5)
pydot/pydot
Oct 2016 - Dec 2018
Python interface to Graphviz's Dot language
Role in this project:
Back-end Developer
Back-end DeveloperContributions:27 commits, 33 PRs, 37 pushes in 2 years 2 months
Contributions summary:Sebastian primarily contributed to bug fixes, code improvements, and preparing releases for the `pydot` library, a Python interface to Graphviz's Dot language. Their work included removing warnings, fixing regression tests, and addressing issues related to package descriptions. They also focused on improvements like making attribute order deterministic and adding support for Windows' conda installations. Furthermore, the user updated documentation and maintainer information.
graph-analysisdot-languagepythondotpython-interface
spendworx/react-bootstrap
Aug 2017 - Jul 2021
Contributions:2 PRs, 4 pushes, 1 branch in 3 years 11 months
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