Full-Stack Developer / Shopify Expert (eCommerce CRO Focus)

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Full-Stack Developer / Shopify Expert (eCommerce CRO Focus) based in Portugal.

This role offers the opportunity to take direct ownership of the performance, usability, and conversion of high-traffic Shopify storefronts. You will proactively identify opportunities, implement improvements, and run experiments designed to generate measurable business results. The position combines hands-on full-stack Shopify development with conversion rate optimization, performance engineering, and customer experience improvements. You will work across Liquid, JavaScript, HTML, CSS, Shopify APIs, themes, apps, and custom storefront functionality. Close collaboration with marketing, design, and product teams will help turn ideas into tested, high-performing experiences. Success will be measured through tangible improvements in conversion rates, site speed, testing velocity, and overall storefront performance.