Dennis Block
Freelance Android Developer at Selbstständig
Greater Bielefeld Area Germany
Summary
🤩
Rockstar🎓
Top SchoolDennis Block is a Freelance Android Developer with nine years of experience building and refining mobile applications and libraries from the Greater Bielefeld Area, Germany. Holding an M.Sc. in Applied Computer Science and a B.Sc. in Applied Mathematics, he blends solid theoretical grounding with practical Android engineering. Since 2019 he has run independent projects, delivering full-stack features and architectural refactors rather than just UI tweaks. His open-source contributions include significant enhancements to the Android GraphView library—improving tree layout algorithms, customizable node sizing, and bug fixes that improved visualization accuracy. Client work and OSS both show a preference for thoughtful, maintainable code and solving non-obvious layout and algorithmic challenges in mobile contexts.
9 years of coding experience
Master of Science - MS, Angewandte Informatik, Master of Science - MS, Angewandte Informatik at Fachhochschule Südwestfalen Iserlohn
Github Skills (8)
javas10
android10
java10
algorithm9
algorithms9
android-ui8
data-structures8
data-structure8
Programming languages (3)
Github contributions (5)
oss-bandb/GraphView
Feb 2018 - Apr 2021
Android GraphView is used to display data in graph structures.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:4 releases, 41 commits, 15 pushes in 3 years 1 month
Contributions summary:Dennis primarily contributed to the Android-based graph visualization library, implementing features and refactoring existing code. Their work involved significant modifications to the core `TreeView` class, including adding node size customization, and changes to the layouting algorithm. They also refactored code to match naming conventions and fixed a bug within the tree algorithm, ensuring correct display and functionality of the graph.
treeviewandroidtree-structurekotlingraph-structures
oss-bandb/bandb.dev
Jun 2020 - Oct 2021
Website for https://www.bandb.dev
Contributions:1 review, 66 commits, 1 PR in 1 year 4 months
dev
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