Over a three-month period, contributed backend enhancements and bug fixes to the schneems/rails and Shopify/rails repositories using Ruby and Ruby on Rails. Addressed security and reliability by validating redirect locations in schneems/rails, preventing unsafe redirects and improving error handling through automated tests and exception rescue mechanisms. In Shopify/rails, resolved image processing reliability issues by ensuring the mini_magick gem loads correctly at runtime, reducing errors in the pipeline. Delivered new features including a Cache Counter API for efficient metric tracking and granular per-attribute support for unencrypted data in ActiveRecord, enhancing both performance and security flexibility in backend systems.