Worked on the Shopify/semian repository to enhance thread-safety and maintainability in Ruby codebases. Introduced thread-safety linting by integrating the rubocop-thread_safety gem and updating RuboCop configurations, ensuring that concurrency issues are detected early in development. Enforced immutable constants across examples and adapters to align with new linting standards, reducing runtime risks. Upgraded the semian gem from version 0.22.0 to 0.22.1, updating related documentation and configuration files for consistency. Demonstrated strong skills in Ruby development, code linting, and configuration management, focusing on improving code quality, reliability, and compatibility with supporting adapters and development workflows.