Shopify 2.0 Migration Expert (Million-Dollar Store, SEO Preservation Mandatory)

We are an established, high-volume e-commerce brand operating on an older Shopify theme built over 8 years ago. We are looking for a top-tier Shopify Developer to migrate our store to a modern Shopify 2.0 theme with zero downtime. Because we do significant volume, this is a highly sensitive project. Our top priorities are conversion rate optimization (CRO), retaining our existing hard-coded tracking tags, and protecting our organic SEO rankings. Scope of Work: Theme Setup & Customization: Audit, configure, and customize a premium Shopify 2.0 theme (sitting as a draft) to match and upgrade our current brand identity. Rebuild Custom Layouts: Rebuild existing custom product/landing pages created by our SEO team using native Shopify 2.0 JSON templates (sections everywhere) so we no longer rely on legacy custom code. Code Clean-up: Scrub out dead code and scripts left behind by uninstalled legacy apps to maximize page loading speeds. Tracking & Pixel Migration: Audit our current theme.liquid file to locate and safely migrate all hard-coded scripts (Google Tag Manager, Google Analytics, Google Ads, Meta Pixels). SEO & URL Mapping: Ensure 100% URL consistency. Set up a rigorous 301 redirect map for any altered links to ensure zero drops in Google rankings. Launch QA: Conduct full checkout, mobile responsiveness, and tracking validation before hitting publish. Requirements: Proven track record migrating high-volume, 7-figure Shopify stores. Expert-level knowledge of Liquid, JSON templates, and Shopify 2.0 framework. Deep understanding of SEO preservation during site migrations. Strong communication and ability to work safely in a duplicate/draft environment with zero disruption to live operations.