Develop and maintain custom Shopify themes using Liquid, HTML, CSS, JavaScript, and modern frameworks. Optimise storefront performance, ensuring fast load times and smooth UX across all devices. Collaborate with designers to translate mockups (Figma, Sketch, or Adobe XD) into functional websites. Integrate third-party applications and APIs to extend Shopify functionality. Maintain and enhance Shopify Plus sites through continuous updates, debugging, and feature improvements. Build public and private Shopify apps using Node.js and React. Implement system integrations (payments, CRMs, analytics, etc.) and data synchronization. Conduct QA testing, troubleshoot bugs, and resolve performance or security issues. Stay updated on emerging eCommerce technologies and propose innovative solutions. Work closely with project managers to fulfil client requests and deliver pixel-perfect results.