Claude Code UI/UX + Conversion Engineer

*USA EAST COAST NEW YORK TIME ZONE 830 AM TO 5 PM EST FULL TIME JOB* *CLAUDE CODE MAX IS A REQUIREMENT* THE ROLE You are our full-time optimizer. You never stop finding, fixing, and improving. Your weekly loop: 1. FIND: watch real shopper sessions (Microsoft Clarity), read the funnels (GA4), test speed on real phones, shop the site like a customer, and spot where people get confused or leave. 2. RANK: pick the top 3 fixes by money impact. 3. BUILD: design it and ship the front-end code yourself, behind an on/off switch. 4. PROVE: A/B test or measure before/after. It ships only if the numbers improve. 5. REPORT: every Friday, a short note: what you found, what you fixed, the numbers, next week's top 3. WHAT YOU'LL WORK ON - Product cards, product pages, quick view, cart and a one-screen checkout - Mobile-first design (most of our shoppers are on phones) - Page speed and Core Web Vitals (load, layout shift, responsiveness) - A clean design system so every page looks consistent - Trust and conversion: reviews, shipping and return messaging, fitment confidence, Apple/Google Pay - Your own ideas. We expect you to bring them without being asked. MUST HAVE - Uses Claude Code daily (Max plan) to design, build and test. Show us how you work with it. - Strong Next.js / React / TypeScript / Tailwind. You ship your own designs, not just mockups. - Real conversion wins you can prove: "I found X, fixed it, conversion went from A to B." - Page speed experience (Lighthouse, Core Web Vitals, image and bundle optimization) - A/B testing done properly (enough traffic, one change at a time) - Figma for showing designs before building - Automated browser testing (Playwright) to check desktop + mobile before anything ships - Clear written English, short and plain NICE TO HAVE - E-commerce with large catalogs (auto parts is a big plus) - GA4, Microsoft Clarity, GrowthBook or similar feature-flag tools - Accessibility and dark mode HOW WE WORK - Full-time, 40 hrs/week, Monday-Friday, 9 AM-5 PM New York time - Claude Code Max: we cover $100/month after you pass the 30 days - You work with our search engineer and backend engineer; nothing goes live without approval - Speed is a hard rule: nothing you add may make a page slower PLEASE DON'T APPLY IF - You run an agency or have many active contracts. We want one dedicated person. - Your portfolio is only mockups with no live sites.