Java Full Stack Developer Needed

Roles & Responsibilities, Business Rules, UI-Specifications
There will be two types of Users - Admin and Prepaid Mobile User.
Functionality for Admin user:
Upon starting up, the application will show a list of Pre-paid Mobile subscribers whose prepaid plan is
about to expire within next 3 days.
Admin can select a subscriber from the list and will be able to see the complete history of previous
recharges including the name of the plan, date and mode of payment.
Functionality for Prepaid Mobile User:
Upon starting up, the application will ask for the prepaid mobile number and validate if the number is
correct and exists in the active subscriber database.
Once the mobile number is validated, then the application will show all available recharge plans under
various categories such as Popular Plans, Validity Plans, Data Plans, Unlimited Data plans etc.
After selecting the desired plan, the application should show various options for payment such as UPI,
Bank Transfer, Credit/Debit Card etc.
Simulate the dummy payment by accepting the UPI/Bank/Credit/Debit Card details and send a
confirmation email to the registered email address of the subscriber.