Update Shopify Theme to use "View on Amazon" button for Affiliate Products

I am looking for a Shopify expert to update my current theme to include a "View on Amazon" button for my affiliate products. As I already have a specific theme in mind and I have an Amazon Associates account, the ideal freelancer for this job should have experience in customizing Shopify themes and integrating affiliate links. However, the "View on Amazon" button does not need to be customizable as a standard design is sufficient.