Custom WordPress plugin development
Theme architecture and templating
WooCommerce systems and checkout logic
REST API design and implementation
Frontend and backend integration

CRM sync (Zoho, HubSpot)
Shipping APIs (Shippo, USPS)
Payment and billing workflows
Email routing and automation
Webhook pipelines and event handling

Technical SEO and indexing diagnostics
Performance troubleshooting
Production debugging
Hosting and deployment management
Document and PDF generation systems