Sander Kersten
Software Developer at Signify
Eindhoven, North Brabant, Netherlands
Summary
👤
Senior🎓
Top SchoolSander Kersten is a pragmatic software developer with 11 years of experience building reliable, well-tested systems across C++, Python and Flutter, currently developing apps at Signify in Eindhoven. He combines a strong research background (PhD-level applied physics) with hands-on engineering, having architected model-driven C++ generation, CI pipelines, and custom testing frameworks at ASML. An active contributor to the mypy project, he has improved Python static typing for comparison expressions and implemented core type-checking logic that benefits the broader Python ecosystem. Comfortable moving between low-level C++ template metaprogramming and high-level app development, he emphasizes quality, automation and maintainability. Colleagues know him as a thoughtful coach who spots subtle bugs early—his past tooling to statically find memory issues in legacy C code is an example of that practical, preventive mindset.
11 years of coding experience
5 years of employment as a software developer
Master of Science (MSc), Applied Physics, 8.3 (average), Master of Science (MSc), Applied Physics, 8.3 (average) at Technische Universiteit Eindhoven / Eindhoven University of Technology
Dutch, English
Stackoverflow
3,199reputation
258kreached
44answers
3questions
android
top-5%
dart
top-5%
flutter
top-5%
internationalization
top-1%
Github Skills (17)
static-typing10
type-check10
python10
mypy10
internationalization10
parsing10
type-checking10
text-parsing10
android9
flutter9
dart9
mobile6
transition6
streambuilder6
flutter-cupertino6
Programming languages (7)
Github contributions (5)
python/mypy
Sep 2014 - Jun 2015
Optional static typing for Python
Role in this project:
Back-end Developer
Back-end DeveloperContributions:202 commits, 10 PRs, 53 comments in 9 months
Contributions summary:Sander primarily contributed to the development of the mypy static typing tool, focusing on core functionality. Their work involved implementing parsing rules and type checking for comparison expressions. They also updated the type checking to correctly evaluate the resulting type of comparison expressions, and made several refactors and bug fixes.
linterpythontypecheckerstatic-typing
spkersten/flutter_test_ui
May 2020 - Jun 2021
Wrapper for flutter_test that adds a tester argument to setUp and tearDown functions
Contributions:5 commits, 1 PR, 3 pushes in 1 year
testingdartflutter-testflutterteardown
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.