Worked on improving code quality in the pytorch/executorch repository by refactoring Bazel build scripts to enhance maintainability. Focused on the targets.bzl file, the developer identified and removed an unused import, streamlining the codebase and reducing the risk of future import-related issues. This change supports long-term stability and simplifies onboarding for new contributors by making the build rules more readable and easier to audit. The work leveraged Python and backend development skills, with attention to detail in code hygiene and repository management. No major bugs were reported during this period, reflecting a targeted approach to incremental codebase improvement.