I have 23 years of Software experience, including initial 10 years in real time systems, and recent 13 years in on-line transaction payment space. Have written a Radar Simulator, a Financial Transaction Switch, and a Mobile Payments product, among others.
Currently, hands on with core java on technical front, and ISO8583 / ATM / POS / Backend CBS integration / etc. on domain front. Available for 40 to 80 hours per month for freelancing in payments domain.
Online financial transaction processing / ISO 8583 / ATM / POS