Assalamu alaikum,
If a software developer works on a international platform where he has to integrate payment system which takes payment from credit card specially if it is a western ecommerce site like US, Canada etc where by default it can be assumed most of the people are going to use credit card with interest. The payment system may be open for both credit card and debit card. But judging by the demography and purchasing pattern it is quite obvious they are going to use credit card with interest. And almost Similar payment system may exist in a Muslim majority country like Bangladesh (for example SSLcommerz) what is the ruling for that? Will it be Halal to integrate this payment system into the site for a muslim software developer in both situations?
