opencart custom changes

hello, we have a lunched business and we need someone to work with us in all the future development: * have time to work and give us precise dates * Can work with open cart and OCmod (XML files) * get paid per edit, not per hour * acceptable prices * will work on a testing subdomain for development then give the final edits. * work on ftp account, we can provide the module original files to make works easier Let's start with these small tasks to make a testing period 1- we have 2 modules small only one xml file for each, first is to login with phone number second is to prevent duplicated numbers from registering they work on the register page we need to make changes to make them work on checkout page. 2- we have multi vendor extention we need to make changes to it a- add an option to auto-approve products for only some suppliers that are trusted so we will have option behind each supplier to turn on or off the auto approval. b- approval in done by checking the products in a list we need to add an option from inside the product to save and approve the product so that we can open the product review it then approve it directly wihtout returning to the product list then approve 3- we have add photos to option extension for admin we need to make it available for vendor 4- we have notificatoin bar for admin onlt xml file we need to make it available for sellers and make some changes to it lets start with these then we have large edits in future