Worked on improving developer experience and code maintainability across two open source Ruby projects. In schneems/rails, focused on enhancing documentation accuracy by updating the has_one :last_comment example to use descending order, ensuring the example matched naming conventions and clarified usage for Rails users. Later, contributed to ruby/gem_rbs_collection by introducing Ruby Type Signatures (RBS) for the ClimateControl module, establishing type safety and maintainability. This included configuring RuboCop for RBS style enforcement and adding basic tests for ClimateControl.modify and ClimateControl.unsafe_modify. Demonstrated proficiency in Ruby, Ruby on Rails, RBS, and testing practices while delivering targeted, incremental improvements.