During their work on the tree-sitter/tree-sitter repository, Alexandre Loiko focused on improving the reliability of Zig-based build systems, particularly when the project is used as a submodule. Alexandre addressed a bug in the build script by ensuring that source paths are resolved from the build root rather than the current working directory, which prevents path-related failures in downstream integrations. This change involved careful handling of build system logic and cross-environment compatibility, demonstrating a solid understanding of Zig and build automation. The work delivered a targeted fix that enhances build consistency, reflecting depth in diagnosing and resolving environment-specific engineering challenges.