Need a Shopify Developer to fix some website issues. -

Looking for a Shopify proficient web developer to fix some website issues. Looking for someone who speaks good English, can communicate via Skype and is available between the hours of 10am-3pm GMT. 1) Need someone who knows what there doing with Shopify to fix duplication issues with products: For some products there are as many as three different variants coming up were as we would only like there to be one main product page for each product. 2)Need someone to fix and redesign website search: Currently when you try and search from the search results page it bring up a 404 issue, so would like this fixed. We would also like the search function redesigned so it looks more like an actual category page and filters so people can filter their search by product type as well as size. 3) Need someone to edit our product sizing drop down menu: Currently sizes that are both in and out of stock look the same in the drop down menu. We would like this edited so that it is visibly noticeable which sizes are out of stock. Possibly by having a line through out of stock products. 4) Need social sharing buttons added to blog posts: Need someone to setup social sharing buttons so that they are automatically added to the bottom of any new blog post and on existing blog posts. 5) Need filters added to collections pages: We would like filters added to our collections pages so that customers can filter by size, price as well as product type. 6) There is an issue with products that are out of stock still appearing with our other products in our collections: We would like our sold out items to be hidden from our collections pages so they don't show up with other products but remain in the SERPS and setup an automatic redirect so that all out of stock products redirect to main category page. 7) Add sorting options to the website: We want sorting options added to the website so that customers can sort by price (high to low and low to high) as well as other sorting options.