Professional Shopify Store Build of Jewellery brand

I’m gearing up to launch a new online shop for physical products and I need the entire storefront built from the ground up in Shopify. The look and feel must stay firmly on the professional, corporate side—clean lines, confidence-building typography, and a layout that guides visitors straight from product discovery to checkout without distractions.

Here’s what I’m after:
• Theme selection or customisation that matches a corporate brand aesthetic, fully responsive on mobile and desktop.
• Complete store configuration—collections, product pages (with variants and high-resolution images), secure checkout, taxes, shipping zones, and automated order notifications.
• Integration of payment gateways, basic on-page SEO, and speed optimisation so pages load quickly for customers around the globe.
• A coherent navigation structure and polished content sections (About, Contact, FAQ) that reinforce trust.
• Final hand-over with the store live, test orders processed successfully, and a quick walkthrough so I can manage inventory and promotions on my own.

If you’ve taken other Shopify stores from blank slate to profitable launch—especially in a corporate style—I’d love to see examples.