Stefan Holderbach
Software Engineer
Heidelberg, Baden-Württemberg, Germany
Summary
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Rockstar🎓
Top SchoolStefan Holderbach is a software engineer with nine years of experience building robust CLI and back-end tooling from Heidelberg, Germany. He contributes actively to Nushell and its reedline line editor, focusing on history management, completion, keybindings and shell ergonomics—work that improves developer UX in a widely noticed open-source shell project. Comfortable in Python and exploring Rust, he pairs automation skills with systems-level thinking to stabilize prompts, command execution, and environment handling. Stefan’s background in computational studies from Ruprecht-Karls-Universität Heidelberg informs a methodical approach to bug fixing and refactoring, and he enjoys connecting low-level input handling with practical user-facing features.
9 years of coding experience
Abitur, Abitur at Bismarck-Gymnasium KarlsruheBachelor of Science - BS, Bachelor of Science - BS at Ruprecht-Karls-Universität Heidelberg
German, English, griechisch, alt (bis 1453), Latin
Stackoverflow
96reputation
3kreached
9answers
0questions
Github Skills (23)
scripting10
testing10
history10
script10
sh10
rust10
shell10
keybindings10
cli10
completions10
dependency-management9
code-optimization9
automations8
automation8
jupyter-notebook6
Programming languages (7)
Github contributions (5)
nushell/reedline
Mar 2021 - Dec 2022
A feature-rich line editor - powering Nushell
Role in this project:
Back-end Developer
Back-end DeveloperContributions:24 releases, 190 reviews, 133 commits in 1 year 9 months
Contributions summary:Stefan primarily contributed to the development and enhancement of the `reedline` project, a feature-rich line editor. Their work focused on implementing core functionalities such as history management, completion menus, and keybinding configurations. The user addressed bug fixes, added features such as newline insertions, and performed code refactoring to increase the robustness of the line editor project. They also added example code to show how to integrate with other features like the highlighter and the completion menu.
rustreplacementconemureadlineline-editor
nushell/nushell
Jun 2021 - Jan 2023
A new type of shell
Role in this project:Back-end Developer & Automation Engineer
Back-end Developer & Automation EngineerContributions:1170 reviews, 126 commits, 1349 PRs in 1 year 7 months
Contributions summary:Stefan primarily focused on improving the functionality and stability of the Nushell shell. Their contributions included fixing bugs related to prompt animation and command execution within the CLI. They were also involved in implementing new features like the ability to set the environment variables in the shell, adding support for the F1-F12 keys. Their work touched on the core functionality of the shell by updating dependencies and adding features, enhancing the developer experience.
rusttype-ofshellbash
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