Need a developer for shopify

A Developer to fix a few bugs on my shopify website 1. How to add configuration that can help me connect my shopify store through google and facebook. 2. Reduce cart process- its 4 steps, maybe make it 2 or 3 3. Ask the developer if he can connect every image, like if they choose XXL they will be taken to the XXL page 4. Also check why women tshirts cant be clicked 5. Check -When searching why cant find all the products underany category. 6. Shipping to be charged as per weight 7. When entering a payment gateway its not having that card no but it takes to another screen, fix that. 8. Add extra cost for product on COD handling charges