Add a custom module in a Magento website

Job ID: 32534573

Budget: ₹1,500 – ₹12,500 INR

I have a Magento website which needs a custom module to be coded for it.
The task is divided into two parts:
1) Add a search bar on a page where user will type in the reference code of the product and the hits should be displayed in real time below the search bar
2) On clicking of a suggestion from the results, a div should be displayed with the product details and a text box for quantity along with a add to cart button.

The whole process should be done without any page reloads (using AJAX)

Here is the reference site : https://www.secomoto.com/recambios
Related categories: PHP JavaScript AJAX Magento jQuery / Prototype