Hello Client,
I have read your requirement about -
Built a shopify plugin/app for marketplace and I am sure I can complete it as per the given description.
I do have skills like App Developer, Shopify, Shopify Templates, Software Development, Web Development which you are looking in your project.
Your project looks very interesting to me and I would like to work on it.
I Would like to discuss few things over the chat. So please do ping me.