Shopify Theme Migration

I need an experienced Shopify developer to reinstall my exact build on a new, minimalistic theme. The current theme has functional bugs that need to be resolved.

Key Requirements:
- Migrate existing build to a new, minimalistic Shopify theme
- Ensure all functionalities are bug-free
- Maintain design integrity

Ideal Skills and Experience:
- Proven expertise in Shopify theme development and migration
- Strong problem-solving skills to address and fix functional bugs
- Experience with minimalistic design aesthetics
- Fast turnaround time is crucial