Worked on the laravel/cashier-stripe repository to address a critical issue in the Stripe Flexible Billing Deletion flow, focusing on backend reliability and user experience. The solution involved updating the deletion logic in Subscription.php to introduce a flexible-billing check, which prevented errors when removing metered prices from flexible Stripe subscriptions. Additionally, the UI for subscription updates was refined to align with these backend changes, improving the overall subscription management process. Collaborated closely with project maintainers to ensure code quality and adherence to standards, utilizing PHP, Laravel, and Stripe integration skills to enhance the stability and reliability of billing operations.