Jan Stotz
Dipl.-Inform. at Fraunhofer Institute for Secure Information Technology SIT
Frankfurt Rhine-Main Metropolitan Area Germany
Summary
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RockstarJan Stotz is a seasoned software engineer with 17 years of experience based in the Frankfurt Rhine-Main area, currently working at the Fraunhofer Institute for Secure Information Technology. He blends deep backend and security-focused engineering with mobile and UI work, contributing to prominent open-source projects like Soot, FlowDroid and the jadx decompiler. His contributions range from bytecode and static analysis improvements to enhancing APK handling and decompiler UX, showing a rare mix of low-level Java expertise and practical developer-facing feature work. Colleagues rely on him for maintainable, well-instrumented code and for solving tricky resource- and timing-related bugs in security tooling. An understated strength is his consistent focus on code quality and tooling that makes security research and Android reverse engineering more reliable and usable.
17 years of coding experience
Github Skills (25)
kotlin10
static-analysis10
dataflow10
analyse10
decompilation10
soot10
java10
javas10
optimisation10
android10
data-analysis10
file-management9
security9
ui-design9
android-sdk9
Programming languages (20)
Github contributions (5)
soot-oss/soot
Mar 2018 - Feb 2022
Soot - A Java optimization framework
Role in this project:
Back-end Developer
Back-end DeveloperContributions:6 reviews, 45 commits, 33 PRs in 4 years
Contributions summary:Jan primarily focused on improving code quality and maintainability by adding logging and import statements across various Java source files. Their work included modifications to bytecode instruction classes, such as Instruction_Lookupswitch and Instruction_branch. They also touched several utility classes and other code related to the Soot framework, suggesting a focus on refactoring and enhancement.
java-optimization-frameworksootjava-optimizationoptimization-frameworkoptimization
skylot/jadx
May 2015 - Oct 2022
Dex to Java decompiler
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:30 reviews, 81 commits, 92 PRs in 7 years 6 months
Contributions summary:Jan contributed to the development of the jadx-gui decompiler, implementing features and fixing bugs. Their work included adding file drop support for loading APK files, pagination for search results, and making import class names clickable. Additionally, they made code modifications related to handling i18n resources and improving the user interface for the search functionality.
dalvikapktoolresharperjava-bytecodeandroid
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