Shopify Bug Fixing & Theme Customization

I am looking for an experienced Shopify Developer to fix bugs and technical issues on my existing Shopify website and improve its overall functionality. My store has some design and functionality issues that need attention. I need someone who can identify the problems, fix them properly, and ensure everything works smoothly across all devices. Project Requirements: Shopify Bug Fixing and Error Troubleshooting Shopify Theme Customization Shopify Liquid Coding and Debugging HTML, CSS, and JavaScript Fixes Product Page and Collection Page Customization Add to Cart and Cart Drawer Bug Fixes Product Variants and Custom Options Fixes Mobile Responsive Design Issues Navigation and Mega Menu Fixes Shopify App Conflict Resolution Theme Code Cleanup and Optimization Shopify Functionality Improvements Cross-Browser and Mobile Testing Experience with Dawn Theme, Shopify Online Store 2.0, and premium Shopify themes is preferred. I need a reliable developer who can fix existing issues without affecting other website functionalities.