Worked on the Shopify/worldwide repository to address a critical tax compliance issue by correcting Indonesia’s tax rate from 10% to 12%. Focused on configuration management and internationalization, the update was implemented using Ruby and YAML, ensuring the new rate was accurately reflected across the CHANGELOG, Gemfile.lock, region data, and version files. This change improved data integrity and ensured accurate tax calculations for Indonesian customers during checkout. The work included updating documentation and release artifacts to maintain transparency and traceability. By resolving this bug, the developer reduced revenue risk and enhanced the reliability of tax reporting within the codebase.