Shopify Developer Needed for Bug Fixes

I'm seeking an experienced Shopify developer to fix bugs on my existing Shopify website.

The issues include:

Resolving design inconsistencies (e.g., layout issues on mobile/desktop).
Fixing functionality errors (e.g., cart, checkout, or payment issues).
Debugging and optimizing site performance.
Addressing any theme or app-related bugs.

Requirements:

Strong expertise in Shopify and Liquid coding.
Experience debugging and resolving Shopify theme and app issues.
Excellent problem-solving skills.

Please share examples of past Shopify work and your estimated timeline for completion.