PHP Cart Checkout Page

We are looking for a PHP developer to code our checkout page. Currently on our site a user can only purchase one item at a time. We have completed the adding and removing to cart part and cart contents page. Now are looking for a developer to finishing the checkout page and payment processing. The site is written in Core PHP (No Framework). Pending tasks are:- - Generate Paypal checkout form from items in the shopping basket - Modify our Paypal IPN Listener to accept multiple items. - Create CC details form and modify our Stripe Gateway script to process multiple items. (we already have a script which can charge for one item at a time). - Apply discount to cart using ajax call. (we have a table of discount codes in DB) - Login form on checkout page Alot of the code can be copied from the current (single item) Stripe / Paypal checkout process. Most of the work is just querying the cart table and charging customer accordingly. You should be familiar with PHP, JS and CSS (Bootstrap) You should also have experience of Stripe and Paypal (IPN) payment gateways. Our budget for this is around $100- 150, it should be very easy task for a developer who has worked with Sripe and paypal. We also have loads features we need implementing on our site, so based upon successful completion of this task we can award more work. Please add “I love PHP” to you bid so we can see if you have read the entire spec. Thanks