Worked on the Shopify/worldwide repository to deliver a critical update aligning Romanian VAT rates with new regulatory requirements. Addressed the change by updating configuration files in Ruby and YAML, ensuring the VAT rate increased from 19% to 21% without impacting core pricing or checkout logic. Emphasized configuration management and internationalization by isolating the update to a single, versioned commit, which maintained traceability and audit readiness. This approach minimized risk to storefront operations and preserved checkout stability while ensuring compliance. Demonstrated disciplined use of version control and safe deployment practices, focusing on regulatory mapping and localized, config-only changes for robust maintainability.