fastPay is a mobile payment solution under DenizBank. It does not requires any bank account to use. It uses mobile phone number as an account and allow users to transfer money, shopping and all kind of payment. It also has mobile wallet features.
While I was working Intertech, I was responsible for developing new features for fastPay. I mostly worked on backend and banking screens but I also involved in some Android features.
Links: Web: https://fastpay.com.tr