Guenther Deschner
Senior Software Development Manager at IBM
Berlin, Germany
Summary
👤
Senior🎓
Top SchoolGuenther Deschner is a senior software development manager with 21 years of experience leading backend engineering for large-scale open source infrastructure, currently at IBM after senior leadership roles at Red Hat. Deeply experienced in Samba, GlusterFS and protocol analysis (notably contributions to Samba and Wireshark), he combines systems-level C development with security-driven fixes such as ZeroLogon mitigations and robust handling of domain join and VFS integrations. Guenther is as comfortable refactoring legacy netlogon services as he is improving metadata caching and cross-platform filesystem correctness, reflecting a pragmatic focus on stability and interoperability. Based in Berlin, he pairs long-standing open source stewardship with hands-on code contributions, making him a technical leader who still ships critical fixes and protocol dissectors.
21 years of coding experience
18 years of employment as a software developer
Université Paris-SorbonneThe University of Bonn
German, English, French, Dutch, Italian
Github Skills (19)
debug10
filesystem10
glusterfs10
develop10
dce10
back-end-development10
drpc10
storage10
distributed-systems10
c1110
samba10
c1710
rpc10
developper10
wireshark10
Programming languages (7)
Github contributions (5)
samba-team/samba
May 2011 - Nov 2022
https://gitlab.com/samba-team/samba is the Official GitLab mirror of https://git.samba.org/samba.git -- Merge requests should be made on GitLab (not on GitHub)
Role in this project:
Back-end Developer
Back-end DeveloperContributions:175 commits in 11 years 7 months
Contributions summary:Guenther's contributions primarily involve modifying and enhancing the Samba back-end code. They implemented changes related to security vulnerabilities (ZeroLogon), refactoring and debugging the netlogon service, and supporting new configurations for Samba's server functionality. The user worked on file system interactions, specifically with vfs_glusterfs to improve the handling of data integrity. The commits show work on adding features for offline domain join functionality, adding utilities, and testing features.
sambagitlab-mirrorgitlabgit-mergemerge-requests
gluster/glusterfs
Apr 2015 - Apr 2021
Gluster Filesystem : Build your distributed storage in minutes
Role in this project:Back-end Developer
Back-end DeveloperContributions:17 commits, 1 PR, 1 issue in 6 years 1 month
Contributions summary:Guenther primarily contributed to bug fixes and code enhancements within the GlusterFS codebase. Their work focused on addressing issues related to null pointer dereferences, resource leaks, and incorrect handling of extended attributes, specifically within the context of Samba and macOS integration. The commits demonstrate a strong understanding of the GlusterFS codebase and a focus on improving stability and correctness. The user also made improvements to the caching mechanism for metadata.
erasure-codingstoragepersistent-storagedistributed-storagefuse-filesystem
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