D2C Shopify Build & Migration

I’m looking for an experienced Shopify developer to migrate our existing D2C store to Shopify while maintaining a premium, brand-led design and ensuring the transition has minimal to zero impact on ongoing sales and operations.

The goal is to build a Shopify store that feels premium, modern, and unmistakably aligned with our brand — while being fast, conversion-focused, mobile-first, and easy for our team to manage after launch.

Key Requirements
Premium, custom-designed Shopify storefront with strong brand identity, high-quality visuals, and a polished user experience.
Complete migration of products, customers, order history, collections, and relevant store data from our existing platform.
Migration should be carefully planned to ensure no disruption to ongoing sales, with proper handling of URLs, redirects, SEO, analytics, pixels, tracking, and existing customer journeys.
Smooth checkout supporting guest purchases, multiple payment gateways, and flexible shipping options.
Flexible, reusable Shopify sections so our team can easily update collections, banners, promotional campaigns, lookbooks, and homepage content without coding.
Mobile-first, fast-loading, conversion-optimized development with clean Shopify Liquid, HTML/CSS, and JavaScript where required.
Proper setup/testing of SEO, analytics, Meta Pixel, Google tracking, payment gateways, shipping, transactional emails, and other critical integrations.
Thorough testing before launch across mobile, desktop, checkout, payments, forms, navigation, and major customer journeys.
A carefully managed staging → testing → launch process to minimize downtime and protect existing revenue.
Post-Launch Handover

Once the store is live, I’d like a short walkthrough or Loom video covering:

Product management
Collections
Discount codes
Theme customization
Homepage/banner updates
Basic Shopify settings

I’m specifically looking for someone who has successfully migrated existing D2C stores to Shopify, understands the importance of maintaining sales during migration, and can combine premium design with strong technical execution and conversion-focused UX.

If you have relevant Shopify migration examples, please share them along with your estimated timeline, milestones, and approach to ensuring a smooth migration without negatively impacting sales.