• Scope, estimate, and execute development tasks based on approved client requirements, signed SOWs, and predefined service offerings • Develop, customize, and maintain eCommerce storefronts using HTML5, CSS3, and modern JavaScript (ES6+ vanilla) within platform template and configuration layers • Maintain deep platform knowledge and proficiency to apply optimal store configurations within the Miva admin • Develop and support integrations using platform and third-party APIs, including REST and SOAP-based services, to connect Miva stores with ERPs, CRMs, payment providers, shipping systems, analytics platforms, and marketing tools • Consume, map, and validate external data within eCommerce workflows while handling authentication, rate limits, and error conditions appropriately • Troubleshoot and resolve frontend, backend, and configuration issues within the eCommerce platform and connected systems • Optimize storefront performance with a focus on Core Web Vitals, SEO, accessibility, and eCommerce conversion metrics • Ensure cross-browser and cross-device compatibility using a mobile-first approach • Configure full-funnel eCommerce analytics and GA4 tracking using GTM • Develop optimized purchase flows to improve usability, accessibility, speed, and conversion performance • Implement merchandising solutions to enable cross-selling, dynamic product listings, and personalization • Configure rule-based promotions and discounts • Apply eCommerce-specific SEO best practices, including schema markup, product metadata optimization, faceted navigation handling, and crawlability • Write clean, maintainable, and well-documented code following established standards and best practices • Participate in code reviews, QA validation, and client acceptance testing aligned to defined acceptance criteria • Follow established deployment procedures, coordination processes, and release schedules across multiple client environments • Collaborate closely with UX Designers, Project Managers, and other delivery roles to execute pixel-accurate designs and meet delivery milestones • Track time accurately against approved client work, provide regular status updates, and communicate blockers or scope risks proactively • Perform other duties as assigned