Tell me, in what manner did you work with payments and transactions at your last job?

In my most recent role, I worked with payments and transactions as a QA engineer, responsible for verifying the correctness of business logic and transaction security. My tasks included:

• Testing payment scenarios with various methods (cards, e-wallets, bank transfers).
• Checking error handling and transaction rollbacks.
• Automating tests for regression control of payment processes.
• Validating integration with payment gateways and APIs.

For example, I wrote automated tests that simulated successful and unsuccessful payments, ensuring that the system correctly updates order statuses and notifies users.