Shopify small custom work

I am looking for an experienced vendor who can customize a Shopify store with a specific theme/design I have in mind. My project requires more than just the theme customization -- I need additional features and integrations to be incorporated into the overall design. The vendor must have expertise in customizing and designing Shopify stores, as well as experience with adding features and integrations commissioned by clients. I am open to any suggestions or ideas that could improve my online store. I need someone who is motivated and can deliver the completed project on time. Thanks.