Worked on the bazelbuild/rules_android repository to enhance cross-platform cache key consistency in build processes. Addressed a bug by refactoring filename generation logic to use short_path, which eliminated platform-specific components from cache keys and enabled more reliable cache reuse across different environments. This technical approach improved build determinism and reduced cache misses, directly impacting build reliability and performance. The solution also introduced path-mapping support for desugar and dex actions, further consolidating cache key generation. Leveraged expertise in Bazel, backend development, and Python to deliver these improvements, focusing on maintainable code and robust build infrastructure within a complex, multi-platform codebase.