backend developer

i have an ICO site. Need to have mysql back end to track sales and for KYC-AML purposes. Basically, we're selling our coins for US$1 each. For the first million, we offer a 10X deal - we give 9 bonus, so they ay US$1 and get 10 coins. Total is 10 million coins issued. After million, we go to next bonus, 5 coins for each one sold. Here, we cap it at 5 million coins. So total given out is 25 million coins issued. Customers click button to open modal. They enter amount of coins. We calculate the cost. When they agree, we take them to page where they put their details. We store their purchase and details so that we can issue their coins. EXAMPLE: We sold 950,000 coins. Someone wants to buy 100. We have to show message that we can only give them 50 at 10X, and 50 at 5X, total 750 coins. When they accept, we take them to the next page. We also need to update target scale as they're sold Will need admin: 1) shows table of all users 2) click on each line to open details 3) edit and save, export as csv - no delete Dev on localhost. Once i see it working, i will give you credentials, you can install. We test and pay once all bugs are fixed.