Daniel Mach
Build Service Engineer at SUSE
Brno, South Moravia, Czechia
Summary
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Rockstar🎓
Top SchoolDaniel Mach is a Build Service Engineer and seasoned release engineering leader with 11 years of experience driving package management and build infrastructure for enterprise Linux at Red Hat and SUSE. He combines hands-on expertise in Python and C++ with deep knowledge of RPM/DNF internals, having architected the DNF 5 rewrite and led modularity efforts to keep RHEL and Fedora compatible and maintainable. A proven people manager and product owner, he excels at turning complex refactors into testable, backward-compatible releases while building high-performing teams. His open-source contributions include security and robustness improvements to SaltStack's secret-management renderer and sustained work on the osc CLI for the Open Build Service, reflecting a pragmatic focus on tooling and developer productivity. Based in Brno, he pairs systems-level thinking with practical optimizations—such as a personal dbox tool to accelerate development and testing—to speed delivery without sacrificing stability.
11 years of coding experience
12 years of employment as a software developer
Masters Degree (Mgr.), Faculty of Informatics, Masters Degree (Mgr.), Faculty of Informatics at Masarykova univerzita
English, Czech, German
Stackoverflow
1reputation
0reached
0answers
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Github Skills (26)
python10
command-line-interface10
configuration-management10
saltstack10
command-line10
cli10
package-management9
security9
package9
packager9
build-automation9
devops9
infrastructure-as-code9
debian-packaging9
package-manager9
Programming languages (9)
Github contributions (5)
openSUSE/osc
Dec 2021 - Jan 2023
The Command Line Interface to work with an Open Build Service
Role in this project:
Back-end Developer
Back-end DeveloperContributions:106 reviews, 460 commits, 751 PRs in 1 year 1 month
Contributions summary:Daniel primarily contributed to the development and maintenance of the osc command-line tool. Their commits involved fixing bugs, improving functionality related to building Debian packages, managing configuration files, and enhancing the handling of various options like --download-api-only. The contributions also included adding features like support for flavors in aggregatepac and improvements to the HTML documentation, indicating a focus on both core functionality and user experience. Furthermore, the user updated the build system to support newer Python versions.
sarifvalgrindpythoncommand-line-interfaceopen-build-service
saltstack/salt
May 2022 - Jul 2022
Software to automate the management and configuration of infrastructure and applications at scale.
Role in this project:Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:3 reviews, 6 commits, 4 PRs in 1 month
Contributions summary:Daniel focused on improving the `pass` renderer within the SaltStack project, which is used for secret management. They implemented critical updates such as securely handling arguments to the `pass` binary, fixing UTF-8 handling, and adding unit tests. Furthermore, the user enhanced robustness by addressing potential errors when the `pass` executable is unavailable and made significant performance enhancements through optimization and migration of string formatting.
pythonzeromqevent-streaminfrastructure-managementcloud-providers
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