Pascal Welsch
Chief Technology Officer at phntm
Cologne, North Rhine-Westphalia, Germany
Summary
🤩
Rockstar🎓
Top SchoolPascal Welsch is a technology leader and hands-on CTO based in Cologne with 13 years of experience building mobile-first products and developer tooling. Currently leading phntm, he combines strategic product leadership with deep engineering chops cultivated as a senior Android developer and Flutter Google Developer Expert. He co-founded Wiredash and has a strong track record contributing to open-source projects—improving build pipelines, Android MVP libraries, SharedPreferences replacements, and Dart utility extensions with thorough tests. Pascal is comfortable across the stack, from build/release automation to UI state management, and often focuses on robustness and lifecycle correctness in mobile code. A frequent speaker and community contributor, he blends startup pragmatism with engineering rigor and an eye for developer experience. Outside work he’s a cat-lover who channels curiosity from pet projects into practical improvements in libraries used by other engineers.
13 years of coding experience
10 years of employment as a software developer
Bachelor of Science (BS) Angewandte Informatik, Bachelor of Science (BS) Angewandte Informatik at Duale Hochschule Baden Württemberg
Stackoverflow
5,162reputation
1.1mreached
65answers
25questions
android
top-5%
gradle
top-5%
server
top-5%
android-studio
top-5%
android-gradle-plugin
top-5%
intellij-idea
top-5%
Github Skills (34)
flutter10
unit-testing10
flutter-apps10
testing10
model-view10
mvp10
android-sdk10
java10
javas10
android10
flutter-game10
dart10
release-automation10
gradlew10
gradle10
Programming languages (17)
Github contributions (5)
simc/dartx
Oct 2019 - Apr 2022
Role in this project:
Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:12 releases, 16 reviews, 141 commits in 2 years 6 months
Contributions summary:Pascal primarily contributed to the `dartx` library by adding new features and utility methods related to iterable manipulation. They implemented methods like `mapIndexed`, `mapIndexedNotNull`, `filterIndexed`, and `filterNot`, enhancing the library's functionality. Furthermore, the user added new unit tests to verify the correctness of these newly implemented methods, ensuring code quality and reliability. They also refactored and removed dependencies from the library.
dart2dartflutterutilitiesextension-methods
GCX-HCI/tray
Feb 2015 - Aug 2017
a SharedPreferences replacement for Android with multiprocess support
Role in this project:Mobile Developer (Android)
Mobile Developer (Android)Contributions:7 releases, 108 commits, 80 PRs in 2 years 6 months
Contributions summary:Pascal primarily contributed to the `tray` repository, which is a SharedPreferences replacement for Android. Their work involved modifying the `TrayProvider` class to include support for internal preferences, along with refactoring and improving code related to preference access and management. Additionally, they made changes to `Preference`, `TrayPreference`, and related test files, further indicating their focus on the core functionality of the library, with a strong emphasis on the Android platform.
android-libraryandroidkotlinsharedpreferencesmultiprocess
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