David Arnold
Gräfelfing, Bavaria, Germany
Summary
🤩
RockstarDavid Arnold is a multilingual, entrepreneurial technologist with 12 years' experience blending DevOps, backend engineering, and system architecture from Gräfelfing, Bavaria. He excels at Nix-based infrastructure, reproducible builds and deployment tooling—contributing to influential projects like nixos-generators, devshell, colmena and disko—while also improving backend reliability in Python projects such as Frappe/ERPNext. Comfortable across the stack, he moves between CI/CD, storage migrations (GridFS), Redis queue hardening, and rigorous test automation to raise system resilience. David favors humanistically informed cybernetic management: combining business development instincts with pragmatic technical leadership to turn complex systems into maintainable, auditable workflows. An avid open-source maintainer and problem-solver, he often focuses on reducing dependency bloat and streamlining flake-based workflows—small structural changes that yield outsized operational gains.
12 years of coding experience
Github Skills (85)
python10
nix10
testing10
system10
automation10
f10
assert10
backend10
erp10
javascript10
filehandle10
architecture10
nixos10
editor10
kakoune10
Programming languages (31)
Github contributions (5)
numtide/devshell
Oct 2020 - May 2022
Per project developer environments
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:22 reviews, 11 commits, 29 PRs in 1 year 7 months
Contributions summary:David primarily focused on improving the `devshell` project, a tool for per-project developer environments. Their contributions included refactoring code to avoid escape codes, shortening menu commands, and implementing command categories. The user also enhanced the project by providing means to add extra overlays, improving code formatting and style, and refactoring the project to embrace flakes for version pinning.
gitpoddirenvtomldotfilesnvm
nix-community/nixos-generators
Jun 2021 - Oct 2022
Collection of image builders [maintainer=@Lassulus]
Role in this project:DevOps Engineer & System Architect
DevOps Engineer & System ArchitectContributions:4 reviews, 5 commits, 6 PRs in 1 year 4 months
Contributions summary:David focused on enhancing the build and deployment process of the `nixos-generators` project. Their commits involve refactoring the build process to avoid unnecessary dependencies, improving module identity, and renaming packages to improve project structure. They updated the flake.nix file to streamline dependency management and corrected package naming for better project consistency. The user also worked on fixing format module identity.
nix-flakenixos-generatorsnixos-configurationisoflake
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.