Over a two-month period, contributed to the rails/rails and Shopify/sorbet repositories by delivering targeted backend improvements in Ruby and Ruby on Rails. Developed a metadata-forwarding feature for MirrorService, ensuring that content_type, filename, disposition, and custom_metadata are consistently propagated across S3, R2, Azure, and GCS during mirroring, which resolved issues with incorrect MIME types and aligned mirrored uploads with the original upload flow. Additionally, enhanced Sorbet’s type system by adding missing Proc composition operators to the RBI definitions, introducing regression tests, and addressing a long-standing type-checking error, thereby improving type safety and developer productivity in Ruby codebases.