Senior Shopify Full-Stack Developer at Onhires

Location: UK Working hours: Standard UK business hours Remote PRODUCT OVERVIEW The team is building high-traffic Shopify stores for one of the world’s largest music companies, powering merch and digital storefronts for major artists around the world. This is a chance to work on complex, large-scale eCommerce experiences with real visibility and impact — helping shape how millions of fans discover, shop, and engage with artist brands globally. The environment is fast-moving, product-minded, and highly collaborative, with strong focus on performance, scalability, user experience, and modern Shopify development standards. Role Overview This role is for a deeply hands-on Shopify engineer with strong experience across multiple parts of the Shopify ecosystem — from themes and storefront features to apps, extensions, functions, and headless implementations where needed. You will work on sophisticated eCommerce solutions that support high traffic, multiple markets, and demanding product requirements, with strong focus on performance, scalability, maintainability, and modern development standards. WHAT YOU’LL DO - Build and maintain advanced Shopify storefront experiences using modern development practices - Develop and customize Shopify themes with scalable architecture and reusable components - Work across multiple areas of the Shopify ecosystem, including themes, apps, extensions, and platform capabilities - Implement Shopify Functions, Pixels, and other advanced commerce features where relevant - Contribute to headless or partially headless Shopify solutions when needed - Build clean, maintainable frontend and backend solutions for high-performance eCommerce environments - Collaborate with designers, architects, and product stakeholders in an Agile team - Write documented, reliable code with strong attention to performance and maintainability - Support deployment and engineering workflows through Git-based collaboration and CI/CD best practices REQUIRED EXPERIENCE Recruiters should verify the following before submitting candidates: - 8+ years total development experience can be considered, but 10+ years is preferred - Ideally the last 3–5 years focused on Shopify - At least 4–5+ years of dedicated Shopify experience preferred - Strong hands-on experience across multiple areas of Shopify, such as: - theme development - apps / extensions - Shopify Functions - Pixels - headless Shopify Candidates should clearly mention the actual Shopify features or implementations they worked on. If the organizations they worked for did not use Shopify, the profile should not be submitted. CORE TECHNICAL SKILLS REQUIRED These must be visible in the resume: - Liquid - HTML - CSS - Tailwind - JavaScript - TypeScript - React - Next.js or Remix - Node.js or other backend experience - Git / GitHub - Basic CI/CD knowledge - GitHub Actions - Webpack or similar bundling tools If the resume does not clearly show Shopify ecosystem work together with these core skills, the profile should not move forward to screening. NICE TO HAVE - Shopify Checkout Extensibility - Shopify Pixels and tracking implementation - Headless commerce architecture - Playwright - Unit testing - Experience in complex international eCommerce environments - Performance optimization for high-traffic storefronts