Worked on Express Checkout Enhancements for the SalesforceCommerceCloud/pwa-kit repository, focusing on improving the reliability and flexibility of the checkout process. Developed per-page toggles for express payment buttons, allowing business users to control their visibility through Business Manager. Implemented a return URL builder to support redirect-based payments, ensuring that order details are embedded and accessible during payment confirmations. The work emphasized user experience and operational control, with careful attention to changelog documentation and reviewer feedback. Utilized React and JavaScript for front end development, incorporating thorough testing practices to ensure robust feature delivery within a one-month development period.