Worked on the getsentry/sentry-cli repository to address a critical issue in the sourcemap injection workflow, focusing on backend development with Rust. The main contribution involved refining the logic to ensure that .map files were correctly excluded from JavaScript injection, thereby preserving the integrity of sourcemaps and reducing debugging risks in CI/CD environments. This was achieved by separating file discovery and injection logic, preventing misclassification of file types. Regression tests were added to guarantee that .map files remain unaffected by injection processes. The work demonstrated strong proficiency in Rust and careful attention to robust, deterministic file handling in backend systems.