Shopify UI/UX Engineer

We're looking for a Shopify UI/UX Engineer to take full ownership of the storefront for a fast-growing DTC nutrition brand co-founded by a high-profile media personality. This is not a scoped ticket role. You will be the single in-house owner of the entire storefront, replacing an agency and becoming the sole point of contact for everything from new page builds and interactive widgets to app configuration and bug fixes.You will write Liquid templates, build custom sections, create JavaScript-powered interactive tools, manage the app ecosystem, and make design decisions independently, all while keeping the site fast, accessible, and on-brand. You need real design taste, not just implementation skills. If you need pixel-perfect Figma specs for every component or in-person oversight to ship, this role is not the right fit.Claude Code is the primary development tool for this role. Comfort using AI-assisted development is required, not optional.Why You'll Want to JoinYou will be paid in USD (bi-monthly: every 15th and 30th)Up to 14 days of Paid Time Off annually (starting Day 1)Observance of Holidays per company guidelines100% remote setup so you can work wherever you're most productiveFull ownership of a live, revenue-generating Shopify storefront from day oneDirect collaboration with the Head of Product and Figma designer on a lean, high-output teamWhat You'll Work OnStorefront Development and Maintenance (40%)Own the full Shopify theme codebase including Liquid templates, CSS and SCSS, and vanilla JavaScript or lightweight frameworksBuild and iterate on PDPs, collection pages, landing pages, the blog, and informational pages including FAQ, About, and ScienceCreate custom theme sections and blocks so non-technical team members can manage content via the Shopify editorImplement responsive, mobile-first designs that render well across devices and browsersManage product pages with multiple SKUs and variants, subscription and one-time purchase toggles, and dynamic bundlesInteractive Widgets and Custom Functionality (25%)Build embedded mini-apps and interactive tools such as calculator widgets, quizzes, and product recommendation experiences that drive conversionImplement dynamic product bundles, quantity selectors, and cart upsell experiencesIntegrate third-party scripts and embeds including Klaviyo, Okendo, Instafeed, and TripleWhale cleanly without performance degradationUse Claude Code as the primary development tool for writing, refactoring, and debuggingApp Ecosystem and Integrations (15%)Manage and configure the full Shopify app stack including Klaviyo, Okendo, Upcart, Aspire, TripleWhale, Avalara, Flow, Replo, VerifyPass, Instafeed, accessiBe, and othersEvaluate new apps and recommend swaps when better alternatives exist — you are expected to have opinions hereWire up app-level functionality with the theme including cart drawer upsells, review widgets, loyalty integrations, and fulfillment rulesPerformance, SEO, and Accessibility (10%)Maintain Lighthouse performance scores and optimize images, lazy loading, critical CSS, and third-party script loadingImplement structured data using JSON-LD, semantic HTML, meta tags, and technical SEO best practicesEnsure WCAG 2.1 AA compliance is built natively into the storefront, not just patched with third-party toolsDesign Collaboration and Brand Execution (10%)Translate Figma mockups into production Liquid and HTML and CSS while filling in design gaps when full specs are not providedUse Figma and Adobe Creative Suite directly to make on-brand design decisions for components, spacing, typography, and micro-interactions without waiting for explicit directionMaintain a consistent visual system across the site as new pages and features are addedWhat You Bring3+ years of professional Shopify theme development including Liquid, Shopify APIs, and theme architectureStrong frontend fundamentals including semantic HTML, modern CSS, and responsive designJavaScript proficiency sufficient to build interactive widgets, handle DOM manipulation, and integrate third-party librariesDemonstrated design sensibility shown through a portfolio where you made real aesthetic decisions, not just implemented specsExperience with Shopify section and block architecture and the theme editor customization modelFamiliarity with the Shopify app ecosystem including configuring Klaviyo, review apps, and cart appsFluency with Claude Code or comparable AI-assisted development tools as a natural part of your workflowStrong async written communication skills for a distributed team environmentWorking knowledge of Figma and Adobe Creative SuiteNice to HaveDTC or agency background in supplement, health, or wellness categoriesExperience with Shopify Plus features including Scripts, Flow, and LaunchpadFamiliarity with subscription billing platforms such as Recharge, Skio, or native Shopify subscriptionsUnderstanding of CRO principles, A/B testing, and analytics integrationExperience with Shopify Storefront API o