Senior Shopify Developer

Role Description Our customer is an international health products company headquartered in the United States. The client has been on the market for over 30 years. Annual revenue is more than $1.5b and keeps growing. They use an e-commerce platform with multi-level marketing to distribute their products, which has a lot of users around the world. Qualifications 8+ years of professional web development experience, with at least 5 years dedicated to developing on the Shopify platform Expert-level proficiency in the Liquid templating language, Online Store 2.0 architecture, sections and blocks, metafields, theme app extensions, with deep expertise with Shopify CLI Deep understanding of the Shopify Storefront API, Admin API (preferably GraphQL), App Bridge, webhooks, and integrating apps for subscriptions, search, reviews, loyalty, and analytics Proven track record of launching and optimizing large-scale, high-traffic e-commerce platforms with complex business flows Experience with headless Shopify implementations using Hydrogen/Remix or Next.js, including edge rendering and advanced caching strategies Proficient in React, Node.js, serverless technologies (Cloudflare/AWS), GraphQL tooling Strong background in HTML, CSS/SCSS, modern JavaScript/TypeScript, and optimizing DOM performance Expertise in performance optimization techniques, tools, and processes (especially Core Web Vitals, CDN caching) and conversion rates at scale Familiarity with Git/GitHub workflows, code reviews, and CI/CD processes Requirements Expertise in A/B testing, feature flagging, and integrating solutions for payments, fraud prevention, tax/duties, subscriptions, and ERP/PIM systems Strong background in building custom or private Shopify apps, including OAuth and secure key management A bachelor's degree in computer science or a related field Experience with testing frameworks (e.g., Jest, Cypress) for e-commerce environments Spanish (B2 level) Responsibilities Design and maintain the structural components of our online presence, including themes, templates, sections, and app extensions, by leveraging Liquid, JSON, HTML/CSS, and JavaScript/TypeScript. Engineer complex Shopify features such as custom logic for checkout, cart, and pricing using Shopify Functions. Implement Checkout Extensibility and manage essential data exchanges through webhooks and custom/private app integrations utilizing the platform's GraphQL and REST APIs. Enhance Performance ensure markup is semantic and crawlable. Set up Shopify Markets, including domains or subfolders, currencies, duties and taxes, translations, and price lists; enable multi-region catalogs to facilitate internationalization. Implement automated testing using Playwright/Cypress and Jest, incorporate type safety with TypeScript, and set up CI/CD pipelines (such as GitHub Actions). Define performance budgets and establish monitoring to maintain high standards of quality and reliability. Deliver accessible user experiences that conform to WCAG standards by supporting keyboard navigation, implementing appropriate landmarks, and utilizing ARIA attributes. Collaborate closely with Design (using Figma), Content, and Growth teams, ensuring code quality by conducting code reviews and providing mentorship to junior and mid-level engineers. Track production metrics such as errors, vitals, and uptime; analyze user funnels using GA4, GTM, and Search Console; and continuously iterate to enhance conversion rate (CVR) and average order value (AOV). Benefits Awesome projects with an impact Udemy courses of your choice Team-buildings, events, marathons