Help me to adding some functions and backend work for my website.

I already have a website UI, I want to add some functions and backend work left.

● Unlimited Services Categories.
● Services Listing
● Dedicated Admin Panel to Add/Edit/Delete Services.
● Promo | Coupon Code.
● Email Notification.
● Dedicated Payment gateway integration : COD | Payment Gateway (RazorPay | PayTM); Credit/Debit. Card, Net Banking/UPI
● Easy Checkout
● Cart Management
● Add Variable Product
● Services Search
● Add Product Detail (Image)
● Sign up /Sign In
● Billing
● Manage Orders
● COD Option
● Responsive Theme
● Order History
● Delivery slot/Time Booking
● Feedback
● smart cart
● profile manage
● Direct Bank Transfer
● Delivery boy Online/Offline feature

I am adding a link to the website for reference: http://thelaundry360.com/
If anyone is interested then please help me with my project, after confirming I will share the rest of the details and files.