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From Legacy Platform to Shopify — in Two Weeks

Migration of an established online store with 8,500+ customers and 3 languages to Shopify.

8,500+

Customers migrated

2,100+

Orders transferred

Languages configured

2 Wochen

Project duration

Challenge

A Scandinavian luxury cashmere label urgently needed a platform change. Their existing solution was outdated, performance was poor, and integrations with email marketing and multilingual tools were no longer reliable. At the same time, no customer record could be lost — the loyal customer base was the brand's most valuable asset.

Approach

My AI system allowed me to handle the entire migration solo. Claude Code analyzed the existing data structure, identified incompatibilities, and helped me develop a custom migration script — including automated mapping of customer data, order history, and metafields. The Shopify GraphQL API enabled efficient batch imports.

Solution

Complete data migration via Shopify GraphQL API with a risk assessment framework for each migration step. Weglot integration for three languages (Danish, Swedish, English). Klaviyo connection for email marketing with segmented flows. Theme customization for the older target audience with larger fonts and simplified navigation.

Results

All 8,527 customer records and 2,165 orders were migrated without data loss. The new Shopify solution loads 3x faster than the previous platform. The multilingual integration works seamlessly across all three markets. The project was completed in two weeks — agencies had quoted 6-8 weeks.