Need a backend developer for an e-commerce website

Website name - Deadbeat.in
Type - Fashion e-commerce
Client requirements - Fully functional e-commerce website (frontend & backend)
Frontend - Html, CSS & JavaScript (for the customer side) & react js or html (for admin panel)
Backend - Whatever suits you just we need the website to work smoothly.
Backend requirements -
• Add new product feature
• Add category
• Edit products
• Email subscription
• Add to cart
• Buy now
• Sort & Filter
• Login & Register
• Reviews
• Search
• Track order
• Select size
• Select color
• Payment integration (razor pay)
• Apply Coupon code
• Place order (checkout)
• Payment & checkout
• Email notification to customer on every purchase
• Connect cart to checkout page
• other backend requirements
Instruction given as per client - He wants a website where he can add products & edit
products on daily basis from admin panel in whatever categories his website has like sale, new
or trending.
- He can see if any customer has made query from contact us page, he also want to see who
all has subscribed his mail subscription in website.
- Can create coupons of discount in admin panel to be used by his customer at the time of
checkout.
- He is paying razor pay and wants to use it as payment gateway.
Now I am doing the major frontend part and all the designing of the website and wants you to
make it fully functional.