Payroll and ESS :
Basically this Application is payroll management with two module .
One is Administrator and Second User :
Admin Module : This is develop windows application with SQL or C#. All most data is synchronize with SAP B1 (HANA or SQL).
I have total 7 years exp with SAP Technical & Functional i have 5-year exp with data syncing SAP PI,ABAP,FIORI,NW i am full stack developer i have c# java and andorid exp