Build a Web apps and API

I need a classified ads web application with the following features [login to view URL] Responsive Design. 2Easy to Browse Ads. 3. Multiple Language. [login to view URL] to signup/signin. 4 Easy to post Ads. 5 Location Based Advertisement. [login to view URL] Based Advertisement. 7. Strong Ads Filter System. 8. Premium Search System. 9 In-Deatils Classified. 10 Social Share Enable. 11 Ads Paid Promotion system. 12 Secure user dashboard. 19 Favorites. - 20 Account Management. 21 Email & SMS Notification. 22 Social Login Enable 23 And More…. Admin Features: 24 Secure admin Dashboard. 25 Website Control. 26 General Setting. 27 Email Setting. 28 SMS Setting. 29 Language Setting. 30 Category Management. 31 District Management. 32 Packages Management. 33 Ads Management. 34 Ads Promotion Request. - 35 Ads Reports. 36 Users Management. 37 Gateways Management. 38 Interface Control. - 39 Menu Management. 40 Advertisement Management. In addition the web apps shall also contains the following features The extra two features needed are:- 1. Trade Assurance Platform: a. Place order through trade Assurance b. Use the Trade Assurance Platform to communicate with supplier c. create purchase through the Trade Assurance Platform d. Payment gateway 2. I need API for the platform to build my Mobile Apps 3. Wholesale feature Note, the trade assurance will work along with the main classified ads, this will help the buyer that want to buy but don't trust the supplier to click a button and buy via the assurance platform, this platform will enable you to pay into our account with our commission then after the buyer confirm delivered we will now release the money to the supplier Wholesale feature will be added to When seller is listing his product, he should be able to select 1. wholesale or retail 2. Premium or free listing APart from the result from search engine, a visitor should only see two Button- Buyer and seller onclick buyer, it will take you to products display page with filter to search on top or side onclick seller, register or login, during registration, seller should be able to select wholesale or retail, premium or free listing Wholesale products and retail products will be on thesame page, premium products will be at the front page and will get more display, wholesale products price will be lower but with minimum order as set by the seller. Lastly, we need API for the mobile apps