Stefan Haas
Senior Software Developer at SUSE
Nuremberg, Bavaria, Germany
Summary
🤩
Rockstar🎓
Top SchoolStefan Haas is a Senior Software Developer based in Nuremberg with nine years of professional experience and a long history working on distributed systems and cluster orchestration. He currently develops core infrastructure at SUSE and previously contributed to workload schedulers and grid engine projects at Univa and Sun Microsystems, bringing deep operational knowledge of Kubernetes and resource management. Stefan is an active open-source contributor to the well-regarded Rook project, where he improved Ceph CSI integration, OSD startup automation, and node orchestration to boost stability at scale. He combines backend and DevOps expertise to turn complex storage and scheduling challenges into reliable, automated solutions, and is notable for focusing on preventing concurrent orchestrations and adding pragmatic version checks that reduce production incidents.
9 years of coding experience
12 years of employment as a software developer
Diplom Informatiker (FH), Informatik, Diplom Informatiker (FH), Informatik at Georg-Simon-Ohm-Fachhochschule Nürnberg
German, English
Github Skills (12)
ceph10
storage10
kubernetes10
automation10
container-storage-interface10
automations10
go10
cloud-native10
csi10
kubernetes-pods10
dockers9
docker9
Programming languages (3)
Github contributions (5)
rook/rook
Feb 2019 - Mar 2021
Storage Orchestration for Kubernetes
Role in this project:
Backend & DevOps Engineer
Backend & DevOps EngineerContributions:3 reviews, 8 commits, 12 PRs in 2 years 1 month
Contributions summary:Stefan primarily contributed to the Rook storage orchestration project by addressing issues related to Ceph cluster management and CSI integration. They focused on improving the automation of OSD startup, preventing concurrent orchestrations, and integrating version checks for the Ceph CSI driver. Furthermore, the user contributed to adding functionality to include new nodes in the orchestration process while improving the project's overall stability.
etcddata-protectionorchestrationdockerceph
shaas/rookcheck
Jun 2020 - Oct 2022
Contributions:27 pushes, 7 branches in 2 years 3 months
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