Modern Java Clothing Ecommerce Platform

I’m building a full-stack Java web shop for a clothing line and I want the entire experience to feel modern and on-trend from the first click to final checkout. The stack must be Java end-to-end, but I’m flexible on the exact frameworks—feel free to suggest Spring Boot, Jakarta EE, React, Angular, or any combination you’re comfortable with, as long as the result is clean, responsive, and easy to maintain.

What I absolutely need delivered:
• User account creation and profile management with secure authentication
• A fast product catalogue that supports filtering, sorting, and keyword search
• Seamless shopping cart and checkout flow wired to at least one mainstream payment gateway (help me choose and integrate the best fit)
• Mobile-first UI with a sleek, trendy look that matches current fashion-retail standards
• Admin back-office for adding products, uploading images, managing inventory, and viewing basic order analytics

Acceptance will be based on:
– Pixel-perfect responsiveness across desktop, tablet, and mobile
– Smooth page transitions and load times under two seconds on common broadband
– Source code documented and pushed to a Git repository I can access
– Clear instructions for local build, deployment, and production hand-off

If you can take this from blank repo to live launch, let’s talk timeframes and milestones.