Roland Wimmer
Flutter App Bayer AG at Flutter Trainer @Flutter-Experts
Munich, Bavaria, Germany
Summary
👤
Senior🎓
Top SchoolRoland Wimmer is a mobile software engineer and Flutter specialist with 8+ years of professional experience, currently driving a Clean Architecture refactor for Bayer’s MagicScout and training developers as a freelance Flutter trainer. He started in Android in 2012 and has been focused on Flutter since 2018, delivering cross-platform apps for major clients like MediaMarktSaturn, Viessmann, REWE and Vodafone while championing unit-tested, modular code and automated release pipelines. Roland combines hands-on implementation (UI component libraries, multi-flavor builds, CI/CD) with coaching—he crafts bespoke trainings from beginner to senior level rather than off-the-shelf courses. Equally comfortable with cloud backends (Firebase, GCP, AWS), GraphQL and traditional REST/SOAP, he prefers long-term freelancing over permanent offers and is deliberate about project selection. An uncommon strength is his track record of taking proofs-of-concept into production-grade, test-first architectures that scale with growing teams.
8 years of coding experience
Master of Science (M.Sc.) Informatik, Master of Science (M.Sc.) Informatik at University of Düsseldorf
German, English
Stackoverflow
2,090reputation
155kreached
8answers
20questions
android
top-5%
Github Skills (72)
mobile-development10
windows10
dart10
debugging10
cross-platform10
android10
mobile10
macos10
flutter10
debug10
ios10
sharedpreferences10
desktop10
material-design10
web-framework10
Programming languages (2)
Github contributions (5)
grAPPfruit/flutter-clean-architecture
Jun 2019 - Oct 2019
Contributions:14 commits, 4 pushes, 5 branches in 4 months
grAPPfruit/lib_shp_to_geojson
Sep 2023 - Sep 2023
Contributions:10 pushes, 1 branch in 9 days
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