Marius Reimer
React Native Developer
Saarbrücken, Saarland, Germany
Summary
👤
Senior🎓
Top SchoolMarius Reimer is a seasoned React Native developer with a decade of experience building production-grade mobile apps across industries including government, e-commerce, real estate, and mental health. Based near Frankfurt and Saarbrücken, he specializes in TypeScript-driven architectures that prioritize clean code, testability, and long-term maintainability while minimizing tech debt. He has led apps serving millions of users, worked on the German KulturPass with SAP, and improved developer workflows through CI/CD, E2E testing, and automation—contributions visible in projects like react-native-background-upload. Comfortable with native modules and monorepos, he pairs hands-on implementation with build-and-release expertise to keep teams shipping fast and stable. Marius’s background in both academic research and enterprise engineering gives him a pragmatic approach to scaling apps without sacrificing code quality.
10 years of coding experience
7 years of employment as a software developer
Master of Science (M.Sc.) Computer Science, Master of Science (M.Sc.) Computer Science at University of Wisconsin-ParksideMaster of Science - MS Computer Science, Master of Science - MS Computer Science at Ostfalia - University of Applied Sciences
English, German
Stackoverflow
412reputation
13kreached
33answers
1question
Github Skills (20)
github-ci10
ios10
react-native10
mobile-development10
testing10
cicd10
file-upload10
android10
build-automation10
semantic-release10
githubaction-workflow10
html6
google-play-services6
android-studio6
scene2d6
Programming languages (15)
Github contributions (5)
Vydia/react-native-background-upload
Mar 2020 - Oct 2022
Upload files in your React Native app even while it's backgrounded. Supports Android and iOS, including camera roll assets.
Role in this project:
Mobile Developer (Android/iOS) & Automation Engineer / Build & Release Engineer
Mobile Developer (Android/iOS) & Automation Engineer / Build & Release EngineerContributions:3 reviews, 20 commits, 39 PRs in 2 years 7 months
Contributions summary:Marius's contributions primarily involve enhancing the example application within the `react-native-background-upload` repository. They added end-to-end (E2E) tests, build automation, and linting to improve code quality and development workflow. The user integrated the test app into the repository, implemented CI/CD using GitHub Actions, and automated version management and package publishing using semantic-release, demonstrating expertise in mobile app development and build automation. They also worked on upgrading the example app and fixing E2E tests.
androidcamera-rolliosreact-native-appupload-file
reime005/mariusreimer.com
Jul 2020 - Jan 2026
Personal Website, Blog and App [WIP] by Marius Reimer.
Contributions:210 pushes, 2 branches in 5 years 6 months
gatsbymonoreporeactreact-nativewip
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