Shopify Relaunch with Off-Page SEO

I’m relaunching my Shopify store and the ultimate target is a measurable lift in sales. The shop’s on-site foundations are already in place; what I need now is a stream of qualified visitors driven by solid, sustainable off-page SEO... (Budget: €250 - €750 EUR, Jobs: Analytics, Content Marketing, Digital Marketing, Internet Marketing, Link Building, Marketing, SEO, Shopify)