Payment Integration with Secure Webhooks

Development of a payment integration with secure webhook handling, subscription logic, and a structured billing flow for end users.

The project included building a clear payment scenario with pricing presentation, checkout and billing portal flow, payment status handling, and event synchronization through webhooks. Special attention was given to reliable payment event processing, correct subscription state updates, and transparent coordination between frontend and backend.

Implemented project logic includes:
— payment provider integration and billing flow
— checkout / subscription / portal scenarios
— secure webhook event handling
— payment and subscription status synchronization
— user-facing pricing interface preparation
— a structure ready for future billing logic expansion

Stack and approach:
payment integration, secure webhooks, subscriptions, billing portal, checkout flow, frontend/backend coordination, event handling, subscription status sync.

Result:
a clean payment solution with a clear user-facing pricing interface, secure webhook processing, and a solid foundation for future subscription billing development.