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Lead Web Developer - eCommerce & Conversion Optimization - 44855989120 at Activate Talent. Job Title:. Lead Web Developer – eCommerce & Conversion Optimization. Job Type:. Full-time / Remote. Work Hours:. 9 AM – 6 PM EST. Job Overview:. We’re helping our client, a fast-growing eCommerce health and wellness brand, find a . Lead Web Developer. to own and optimize their digital infrastructure across Shopify, Klaviyo, and WordPress.. This role is not about passive maintenance—it’s for a growth-minded builder who thrives on testing, learning, and iterating at speed. You’ll be responsible for building and customizing Shopify experiences, driving funnel performance with A/B testing, and ensuring seamless, conversion-focused user experiences across all touchpoints.. Your ability to combine technical excellence with user empathy will help scale digital systems that increase revenue, improve LTV, and create an unforgettable eCommerce experience.. Responsibilities:. . Shopify Development & Custom Coding. : Build and optimize custom sections, PDPs, carts, and checkout flows using Liquid, HTML, CSS, and JavaScript. . . Conversion-Focused Funnel Optimization. : Develop and test landing pages and sales funnels using Zipify Pages, Tapita, or custom code. . . Retention Systems Integration. : Connect Shopify with Klaviyo for lifecycle flows, personalization, and post-purchase engagement. . . A/B Testing & Growth Optimization. : Operate with a “test-and-improve” mindset, iterating on layouts, offers, and copy based on performance data. . . Web Infrastructure & UX Oversight. : Maintain and improve WordPress/Elementor content pages, ensuring SEO, mobile performance, and frictionless UX. . . Creative Implementation. : Translate design mockups into pixel-perfect, brand-aligned code for campaigns and launches. . . Strategic Collaboration. : Partner with marketing and retention teams to shape conversion strategies and guide tech approaches for upsells, subscriptions, and loyalty. . 3–5+ years experience as a web developer in a DTC or eCommerce brand environment. Advanced knowledge of Shopify, Liquid, HTML5, CSS3, and JavaScript. Hands-on experience with Zipify Pages and other conversion-focused Shopify apps (e.g. Rebuy, OneClickUpsell, etc.). Proven experience optimizing checkout flows, upsell/cross-sell implementations, and product page architecture. Familiarity with Klaviyo flows, event logic, and list segmentation. Deep comfort with running A/B tests and interpreting conversion data to make iterative improvements. Growth mindset with a bias toward testing, learning, and fast implementation. Preferred:. Experience building sales funnels and bundles within Shopify or custom-coded sections. Exposure to subscription apps (Recharge, Loop, etc.) and loyalty/rewards integrations. Understanding of conversion copywriting, UX principles, and mobile-first design. Familiarity with WordPress + Elementor and basic PHP helpful. Able to lead or mentor junior developers and freelancers if needed . Company Location: Colombia.