Fix our shopify's collection page listing - exclude sold-out variations/products

I am looking for someone to fix our Shopify collection page listing. Specifically, we want to exclude sold-out entire products from the collection page listing. We want to keep the current design and layout of the collection page. We only need one collection page updated. Ideal skills for this project include Shopify expertise and knowledge of liquid code. Experience with inventory management is also preferred. Thank you!