Cloud Services, Unix Shell Scripting, Solution Architecture, VISA MasterCard Card UPI, Digital transformation projects, EFT transaction switching, Open banking, ATM Switch, Contact and Contactless technologies, Web Service Integration, HSM protocols and configuration, API’s SOAP JSON REST, Cards Payment, PCI DSS and PA DSS standards, Unix Linux environment, ISO8583 messaging standard protocols, EMV technologies and standards, 3DS and Tokenization standards, Automated test tools and simulators