Seeking PHP developer for long term - hiring new freelancers

Hello I am Seeking PHP developer to add the following Features to my existing site scenario: 1. we allow users to take live photo through browser webcam on mobile or desktop and we display all users with picture-username- country -one video - invite /accept/decline--- button [login to view URL] this Feature user can select a tournament or game (displayed by api) or private tournament (displayed from user database )and invite other users and send them ,notification to inbox and browser push notification and email, then user can decline or accept an invitation and select reason plus all messages received by user inbox should be sent by email and by browser push notification - Note:the Feature which allow a user to create tournament and invite users this already done and ip- country Features also and users inbox notification we just need to move features to new page and we already have the smtp function . and send email function which we mentioned in point 2 3. allow user to host tournament and and enable other users to get registered by api and send notification to inbox/email/browser when tournament start 4. we give admin power account to browse the new page you made with option to block user(ip-pc) or delete a picture or a video 5. we show how many tournament a user get invited and earn and allow withdraw, we already have something(not all) related to for how many tournament he get invited which we need to show up. 6-make site responsive like do a swipe finger scroll in the header menu payment should not exceed 80 USD and we are planning to hire the selected freelancer for long term Thanks