Christian Tismer-sperling
Senior Python Consultant at Tismer Software Consulting
Schönberg (Holstein), Schleswig-Holstein, Germany
Summary
👤
Senior🎓
Top SchoolChristian Tismer-sperling is a Senior Python Consultant with over 24 years of hands-on experience in Python and C++, best known for nine years as a core developer and maintainer of PySide (Qt for Python) at The Qt Company. He specializes in large-scale refactoring, legacy modernization, and deep C++/Python integration, and applies AI-augmented workflows to accelerate migrations without sacrificing code quality. His contributions include runtime integration features that cut PySide startup times below one second, binary size reductions, and broader compatibility work for PyPy and the Python Limited API. Creator of Stackless Python and a longtime Python core contributor, he has a track record of supporting mission-critical systems (including EVE Online infrastructure and Swiss emergency services) and turning technical debt into maintainable architecture. Based in Schleswig-Holstein, Germany, he is available for remote consulting or permanent roles and combines academic breadth (MSc in Mathematics/Physics/CS) with decades of production-scale engineering.
24 years of coding experience
34 years of employment as a software developer
Master's Degree Mathematics Physics Computer Science, Master's Degree Mathematics Physics Computer Science at Freie Universität Berlin
English, German
Stackoverflow
1,383reputation
466kreached
20answers
1question
pyqt
top-5%
python
top-5%
Github Skills (142)
programming-language10
python10
pyside10
readonly10
cffi10
gtk10
pypy10
qt10
bundle10
refer10
data-visualization10
py2exe10
revit-api10
data-science10
py2app10
Programming languages (9)
Github contributions (5)
ctismer/pyside6-dev
Dec 2022 - Apr 2025
Contributions:2 PRs, 5 pushes, 122 branches in 2 years 3 months
qtproject/pyside-pyside
Jun 2015 - May 2017
Contributions:263 commits in 1 year 11 months
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