Sebastian Hahner
Postdoctoral Researcher at Karlsruher Institut für Technologie (KIT)
Karlsruhe, Baden-Württemberg, Germany
Summary
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Rockstar🎓
Top SchoolSebastian Hahner is a postdoctoral researcher at KIT Karlsruhe specializing in data-flow and confidentiality analysis for software architectures, with a particular focus on handling uncertainty at design time. He holds a Dr.-Ing. in Informatics (summa cum laude) and has co-authored 30+ peer-reviewed papers at top venues like ICSE and SEAMS. Alongside his academic work, Sebastian is a veteran web-video creator since 2010, producing 4,200+ videos that reached roughly 60 million views and building one of Germany’s largest tech-education audiences while hosting the German while(true) podcast. He contributes to open-source tooling—improving backend usability and testability in projects such as the well-known JPlag plagiarism detector—and blends rigorous research with practical engineering and public-facing tech communication.
10 years of coding experience
4 years of employment as a software developer
Doktor der Ingenieurwissenschaften (Dr.-Ing.), Informatics, summa cum laude, Doktor der Ingenieurwissenschaften (Dr.-Ing.), Informatics, summa cum laude at Karlsruher Institut für Technologie (KIT)
German, English, French
Github Skills (8)
javas10
command-line-interface10
java10
cli10
command-line10
jtest9
junit9
python4
Programming languages (15)
Github contributions (5)
jplag/JPlag
Jun 2021 - Jan 2023
State-of-the-Art Source Code Plagiarism & Collusion Detection
Role in this project:
Back-end Developer
Back-end DeveloperContributions:158 reviews, 153 commits, 357 PRs in 1 year 7 months
Contributions summary:Sebastian primarily focused on enhancing the command-line interface (CLI) of the JPlag tool. They fixed bugs in CLI argument handling, including issues related to sensitivity tuning and similarity threshold settings. The user also refactored language option argument values and fixed code duplication within the CLI, demonstrating a focus on improving the tool's usability and maintainability. Furthermore, the user added testing capabilities to the JPlag project.
collusion-detectionplagiarism-detectiontoken-basedplagiarism-checktoken
codeoverflow-org/chatoverflow-plugins
Mar 2018 - Aug 2019
Contributions:28 commits, 3 PRs, 23 pushes in 1 year 4 months
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