Have you had experience working with systems for processing acquiring payments?

I have experience working with systems that integrate with acquiring payments, for example, through bank SDKs or payment aggregators. In such projects, I had to implement processing of payment transactions, status checks, error handling, and notifications from payment systems.

The main tasks included:

• Integration with acquiring service APIs (e.g., via REST or SDK).
• Ensuring data transmission security (encryption, tokens).
• Handling callback notifications about payment statuses.
• Managing order states in the application depending on the payment result.

Example: in an Android application, you can use the payment provider's SDK to initiate a payment and get the result:

paymentSdk.startPayment(amount, currency, object : PaymentCallback {
    override fun onSuccess(transactionId: String) {
        // Handle successful payment
    }
    override fun onFailure(errorCode: Int, errorMessage: String) {
        // Handle error
    }
})

This experience helps understand the specifics of working with payment systems and the requirements for security and reliability.