Hannes D.
Mobile App Developer
Experience
Mobile App Developer
wikifolio
- Developed and maintained a cross-platform mobile app with React Native (iOS/Android)
- Planned and implemented new features as well as optimized existing functionality
- Native rich-text editor (comment feature)
- Dynamic tables and charts including animations
- Deep and native linking (Branch.io integration)
- Tests and maintenance of test automation (Jest, Maestro)
- Code reviews to ensure code quality
- Worked with CI/CD processes and automated release pipelines
- Close collaboration with backend, design, and product teams
Technologies: React Native, JavaScript, TypeScript, SQL, SQLite, Xamarin, .Net, Python, AWS
Freelance Mobile App Developer
Budget For Nomads
- Development, testing, publishing, and marketing of a cross-platform finance app with Expo
- Implementation in JavaScript, TypeScript, and React Native
- Key features:
- Track expenses and split budgets
- Login, online/offline mode, and live sync
- Automatic currency converter
- Modern, dynamic, and interactive charts
Mobile App Developer
Institute of Music Medicine, Freiburg
- Complete front- and backend development of an app in the Xamarin .Net framework using C#
- Database development in SQLite
- Worked in an interdisciplinary team with medical professionals, physicists, and app designers
Summary
I am a passionate mobile app developer focusing on React Native and TypeScript. Besides my own finance app Budget For Nomads, I have worked in different teams on building complex mobile applications.
From scientific data projects to a commercial trading news app for wikifolio.
Through these projects, I have gained solid experience working with APIs, CI/CD, automated testing, cross-platform development, and agile collaboration.
My focus is on implementing UX-driven front-ends. I bring a friendly and motivated atmosphere to the team and have an eye for detail.
Languages
Education
University of Freiburg
B.Sc. · Computer Science · Germany
Chemnitz University of Technology
B.Sc. · Sensory and Cognitive Psychology · Germany
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