Custom WordPress E-commerce Build

I need a seasoned WordPress professional to transform my concept for an online store into a fully functioning site. The build must revolve around a completely bespoke theme—no off-the-shelf template—so the design, layout and user experience align precisely with my brand vision and performance goals.

Scope of work
• Craft high-fidelity mock-ups (Figma, Adobe XD, or Sketch) and iterate until approved
• Develop a clean, responsive WordPress theme from scratch—Gutenberg-ready, SEO-friendly, and child-theme-capable
• Configure WooCommerce (or another proven e-commerce plugin) and make sure catalog, cart, checkout, order notifications and admin dashboards run smoothly
• Integrate secure payment gateways and set up shipping/tax rules as needed
• Optimise for speed (90+ PageSpeed desktop, 80+ mobile) and pass WordPress theme checks
• Migrate the finished site to my hosting environment and perform end-to-end testing

Acceptance criteria
1. All core shopping flows—browse, add to cart, pay, receive confirmation—work flawlessly on desktop and mobile.
2. No console errors; theme passes WP Theme Check without critical warnings.
3. Final site meets the stated PageSpeed targets.

Please include links to two live e-commerce sites you’ve custom-designed on WordPress, outline your preferred workflow, and provide a realistic timeline for design, development, QA and hand-off. I’m ready to start as soon as I find the right fit.