Worked on restoring the macOS Nix continuous integration workflow in the tenzir/tenzir repository by reverting a previous change that had disabled the macOS Nix CI job. This effort re-established end-to-end CI coverage for macOS environments, ensuring that builds receive timely feedback and reducing the risk of platform-specific regressions. The work involved using Shell scripting and DevOps practices to manage CI/CD pipelines, demonstrating proficiency with Nix-based environments and Git revert workflows. By maintaining CI stability and restoring automated testing for macOS, the developer contributed to more reliable cross-platform development and improved the overall health of the repository’s build process.