Stefan Breunig
Trainer at Complexity Management Academy
Kreisfreie Stadt Aachen Area, Germany
Summary
🤩
Rockstar🎓
Top SchoolStefan Breunig is a trainer and researcher with 12 years of experience specializing in R&D, innovation and complexity management, combining academic rigor from a Dr.-Ing. at RWTH Aachen with hands-on consulting at WZL. He designs and delivers executive education while supporting companies on modular platform design and R&D value-stream analysis, bridging theory and practical process optimization. Stefan also contributes to open source as a developer—improving cloud-storage tooling in the popular rclone project and enhancing usability in the labelImg image annotation tool—demonstrating fluency in back-end systems and UX-sensitive frontend fixes. Based in Aachen, he pairs engineering discipline (M.Eng. in Product Development) with a penchant for making complex systems more manageable and testable, often surfacing subtle edge-case fixes that improve reliability in production-like environments.
12 years of coding experience
Study Abroad Semester, Study Abroad Semester at University of Technology, SydneyDr-Ing., Innovation Management, Dr-Ing., Innovation Management at RWTH Aachen UniversityBachelor of Engineering (B.Eng.), Mechanical Engineering, 1,6 (GPA 3.3), Bachelor of Engineering (B.Eng.), Mechanical Engineering, 1,6 (GPA 3.3) at University of Applied Sciences Aachen
Chinese, Spanish, English, German
Github Skills (26)
filesystem10
qt10
python10
image-processing10
fuse10
synchronized10
data-synchronization10
ui-design10
file-operations10
data-sync10
go10
fileio10
synchronize10
synchronization10
cloud-storage10
Programming languages (18)
Github contributions (5)
rclone/rclone
Nov 2016 - Mar 2019
"rsync for cloud storage" - Google Drive, S3, Dropbox, Backblaze B2, One Drive, Swift, Hubic, Wasabi, Google Cloud Storage, Azure Blob, Azure Files, Yandex Files
Role in this project:
Back-end Developer
Back-end DeveloperContributions:62 commits, 43 PRs, 71 pushes in 2 years 4 months
Contributions summary:Stefan made significant contributions to the `rclone` project, focusing on improving the Amazon Cloud Drive (ACD) backend. Their work includes implementing server-side move operations, adding support for directory moves, and addressing issues related to file management, such as filtering out bogus children and handling naming conflicts. The user also extended existing tests and added features related to FUSE, demonstrating a deep understanding of cloud storage and file system interactions.
googlefile-storageyandexonedrivestorage
HumanSignal/labelImg
Dec 2021 - Jun 2022
LabelImg is now part of the Label Studio community. The popular image annotation tool created by Tzutalin is no longer actively being developed, but you can check out Label Studio, the open source data labeling tool for images, text, hypertext, audio, video and time-series data.
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:7 commits, 8 PRs, 1 comment in 5 months
Contributions summary:Stefan primarily contributed to improving the user interface and user experience of the image annotation tool. Their work involved fixing bugs related to shape highlighting, vertex selection, and image panning, as well as implementing new features such as brightness controls and adjusting the positioning of dialog elements for usability. They also refactored code to consider scale during image panning and added improvements to shape selection logic, resulting in enhanced user interaction and a more stable application.
image-classificationannotation-toolimage-annotation-toolvideopython2
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