Worked on the Shopify/roast repository to enhance reliability and maintainability by addressing test stability and code quality issues. Focused on reducing test flakiness in the OpenRouter configuration by simplifying test setups and ensuring correct initialization with access tokens, which improved test determinism and reduced deployment risks. Additionally, resolved a Gemfile linting issue by enforcing style guidelines, specifically adding a required newline to prevent CI failures and streamline code reviews. Utilized Ruby, Ruby on Rails, and DevOps practices throughout the process, with an emphasis on robust testing and adherence to coding standards to support a stable and maintainable codebase.