Stephan Lachnit
Doctoral Student at Debian
Hamburg, Germany
Summary
🤩
Rockstar🎓
Top SchoolStephan Lachnit is a physicist-turned-software engineer and doctoral student at DESY with eight years of hands-on experience building and maintaining reliable scientific and system-level software. He combines deep domain knowledge in particle physics and detector simulation with practical expertise in build systems, CI/CD and daemon/back-end development—as seen in contributions to ROOT, Allpix Squared, and device-config tooling like libratbag. An official Debian Developer since 2021, Stephan has modernized release and build workflows for high-profile open-source projects such as MangoHud, gamemode and Lutris, improving reproducibility and packaging quality. He routinely tackles low-level problems from CMake and Meson configuration to integrating special mathematical functions and Python bindings, reflecting both breadth and attention to detail. Based in Hamburg, he pairs academic rigor (PhD work at University of Bonn) with pragmatic engineering, often working on obscure but impactful issues like driver report handling and DFSG-compliant tarball automation.
8 years of coding experience
3 years of employment as a software developer
Bachelor of Science - BS, Physics, 1,9, Bachelor of Science - BS, Physics, 1,9 at Heidelberg UniversitySemester abroad, Physics, Semester abroad, Physics at Uppsala UniversitySwedish as a Foreign Language, Swedish as a Foreign Language at Lund UniversityMaster of Science - MS, Physics, 1,15, Master of Science - MS, Physics, 1,15 at University of HamburgDoctor of Philosophy - PhD, Physics, Doctor of Philosophy - PhD, Physics at The University of Bonn
German, English, Swedish
Stackoverflow
13reputation
10kreached
1answer
0questions
Github Skills (59)
git10
github-ci10
c-language10
mson10
archiving10
package-management10
python10
classes10
app-launcher10
linux10
bash10
extraction10
build-system10
cmake10
c1110
Programming languages (21)
Github contributions (5)
moderncv/moderncv
Jun 2020 - Feb 2022
A modern curriculum vitae class for LaTeX
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:43 reviews, 30 commits, 52 PRs in 1 year 8 months
Contributions summary:Stephan primarily contributed to the LaTeX class for creating curriculum vitae documents. They addressed minor issues like fixing typos and adding new social media icons (like Orcid, ResearchGate, and ResearcherID), enhancing the class's functionality. Furthermore, the user contributed to the codebase by making code adjustments such as switching from the `l3regex` to the `expl3` package requirements. They were involved in integrating updates from other branches and releasing new versions of the package.
curriculumvitaemoderncvlatexlatex-class
FeralInteractive/gamemode
Jul 2019 - Jul 2022
Optimise Linux system performance on demand
Role in this project:DevOps Engineer & System Architect
DevOps Engineer & System ArchitectContributions:7 reviews, 45 commits, 38 PRs in 3 years
Contributions summary:Stephan primarily focused on improving the build and deployment processes and optimizing the system's overall architecture. They made several commits related to the build system, including switching to GitHub Actions for CI, ensuring subprojects were up-to-date, and simplifying archive creation. They also refactored the build process to use `builddir` and enhanced formatting and static analysis, indicating a focus on maintainability and code quality. Furthermore, they introduced system-level options like `elogind` integration, highlighting their understanding of the underlying system architecture.
on-demandoptimisevideogameslinuxdemand
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